Lenovo Yoga 900s Review

Lenovo Yoga 900s ReviewRecognizably Different from Competition
The Lenovo Yoga 900s is a super thin notebook convertible with strikingly slim edges as well as attention-grabbing design. It is not merely a beautiful ultrabook, but boasts of a crunchy 1080p touch display, comfy keyboard and adequate battery life. There might be other ultrabooks with better performance, but the Yoga 900s’ blend of form and function isn’t easy to match.


• Dazzling lightweight design

• Excellent battery life

• Crisp and bright display

• Cozy keyboard


• Lags behind the competition in performance

• Lacking in pen

• Click button stiff

Lenovo Yoga 900s Design and Features
The Lenovo Yoga 900s looks more like something out of a premium jeweler’s creation than a laptop. Its black-and-gold designer good looks is totally arresting, mostly due to the impressive hinge, allowing the ultrabook to be folded and flipped into a series of handy modes. The same elegant look is reflected on the keyboard deck, as 900s’s awesome gold keys remain bordered by a unique coating of soft-touch, textured material that is both elegant and comfortable. The carbon fiber external chassis is colored in gold along with a bit of silver.

Lenovo claims that the Yoga 900s is thinnest convertible laptop in the world, and it sure looks the part. It is a delicate 0.5″ thin and weighs a feathery 2.2 lbs, and so a breeze to take around. However what makes the Yoga 900s stand out from the competition is its amazing flexibility as it sports a 360-degree hinge which lets the notebook be used as a propped-up display or tablet. You can use it as a conventional laptop, as also turn it into a tablet by bending the display; while doing so the keys at the back get disabled automatically to prevent possible accidental strokes. Besides, the 900s can be changed into the Stand mode for presentation, or even Tent mode to watch a movie.

The Display

Whether you use the Yoga 900s in the laptop more or tablet mode, its 12″, 1080p display remains extremely crisp. As to the sound, the Yoga 900s’s stereo speakers remain very crisp, although they aren’t nearly loud enough to listen to your favorite songs. The Dolby Audio app that comes bundled with Yoga have several presets for music, movies, voice as well as games. It also comes with a dynamic setting which adjusts automatically to whatever kind of audio you happen to be playing, and an equalizer, to fine tune the sounds.

The 900s can also be used for seamless note taking, duly supported by digitizer pens with no less than 2,048 levels of fine pressure sensitivity, making penning out notes, and doing a bit of doodling seem quite natural and responsive.


The Yoga 900s is a fine combination of substance and style, and comes with a crisp display of 1080p, comfortable keyboard, more than eight hours of battery life into a luxurious plan and something to dream about, if you find it affordable.


7 Ways to Renew Your Old Computer

Renew Your Old ComputerWhat happens when you have an old, poor performing computer which sucks your time and create frustration every day? Here are 7 ways in which you can make the best of it.

1. Upgrade

Did you just install a software or game, and your computer is crawling while loading them?

Yes, it’s probably a very good to spend some money, and upgrade that tortoise. It’s definitely one of the best ways to speed up the old computer with minimum cost.

While it’s not always possible to do an upgrade, especially for laptops, you should still be able to upgrade its RAM and hard disk drive. RAM, also known as PC memory, can give you an extra boost in performance. And upgrading your hard disk to a solid state drive is another way to do it – not only will it boot up faster, your applications will perform better as well.

Just these two minor upgrades will keep your computer fresh and faster.

2. Steroids for CPU

While some computers don’t have the option to upgrade their processor unit and graphics card, you can always work around tweaking its processor.

Overclock it.

If you are adventurous enough, you can try overclocking your processor. It’s one of the best way to squeeze out more performance without breaking the bank.

3. Monthly Clean Up

Before you jump to conclusion, you may want to troubleshoot your computer and make sure the slowness is not caused by malware – viruses, worms, trojan horses spyware or adware.

Do a full computer scan with your antivirus software like AVG, Symantec or McAfee. Also, you can clean up temporary files, update windows, and defrag your hard disk.

If all else fails, don’t despair, you can try to reinstall your operating system from scratch.

4. Speed up Your Applications

Even when it sounds weird to be true, the truth is that some good programs are not optimized to run at their peak performance.

For example, if your web browser loads slowly, it could be due to its history size, installed extensions, or plugins.

5. The Older Versions

If your hardware doesn’t support the latest version of a particular application, like Photoshop CS5, use an older version instead. While running older software isn’t always the best idea, if it can still get the job done, you will get lesser frustration and time wastage.

6. Deal with Your External Components

Besides their superior performance, brand new computers offer the fresh feeling of owning it, like a brand new car. New mouse, keyboard and speakers. These are the items which you can replace easily, without breaking much of a sweat. Sometimes all you need to do is to just buy new external parts.

It will make your computer feel nicer – at least for a few months.

If you dislike your current mouse or keyboard so much, because of their worn out look or clicking issue, find better ones and replace them instead. (Using a mouse feels so much better than using your laptop’s trackpad.)

Hate your old speakers? Get a new headphone set – it’s up to you to decide what you want.

It’s true that those external parts won’t make your computer perform better, but it could save you from pulling your hair – while dealing with the frustration.

7. Light Weight Champion

If you really don’t want to part with your old computer, here’s another way to get around.

Install another operating system and then try them out.

And there are plenty of options out there. Great news is that some of them are free.

Here are some of the options available in the market today: Linux mint, Chrome OS, Jolicloud, Ubuntu. They should perform better even on older hardware.

If all else fails, seriously, you might have to bite the bullet and go out there to purchase a brand new computer. And if you decide to ditch your old computer, do make sure you recycle it properly.

Tips To Maintain Performance Of PC

Maintain Performance Of PCPeople are using advanced technological devices for different purposes. The use of advanced gadgets has increased the rate of working in offices. Now complicated projects can be easily performed alone which is not possible earlier. This is because advanced gadgets are simply awesome in performing works effectively. All the offices around the world are using special quality gadgets useful in performing works effectively and according to global standard. There are numerous devices that are being bought by people to use in works nicely. Let us look at the important gadgets that are being used by professionals and its maintenance.

iMac Repairing for Resolution of Problems

Apple has the most advanced gadget useful for performing works effectively. Special hardware and software is used to be suitable for performing complicated projects immediately. Users enjoy working in the gadgets due to obstacle free experience during works. The retina display, processor, slim design, and other applications allure consumers from different regions of the world. iMac is an important gadget of this brand made to provide amazing using experience to users. Despite having advanced applications and hardware, iMac is not free from glitches that occur after sometime. iMac repair is the only solution to avoid the problems and get high end performance during work. A slight problem in iMac can get complicated due to aggravation of the problems. This is why Apple certified technicians are needed to resolve the issues related to it immediately. Skilled Apple certified technicians are required for resolving problems of devices immediately. Don’t hand over the iMac to local repairing vendor without any skills and equipment required for resolution.

Maintain Performance of Laptops

Laptop is a small gadget but highly useful for performing works effectively. Laptop can be easily carried to different places and perform work effectively even during traveling. Though, it is small but packed with special applications useful in performing works effectively. It has become the favorite platform for businessmen and students due to its portability. Maintaining laptop is extremely useful for users to get continuous performance during works effectively. Laptop repair is essential to resolve issues related to laptop immediately. Skilled technicians are required for resolving issues and get high end performance during works. Projects can be easily completed using gadget complementing with needs of the professionals. This is the reasons people are buying laptop with special processors and hardware required for higher performance. In fact, it is a good decision for.

How To Download And Register Missing DLL Files

Download And Register Missing DLL FilesIn some circumstances, it may happen that some program is a lack of a file with the. Dll extension, if we do not hold that file, the program or some of its functions can’t be used. It may also have other extensions like .drv, .exe, .ocx, and .vxd depending on how the designers structured the application.

Usually in these situations you got to download the file that is missing, and often to assure that the DLL is that the program requires performing a procedure called DLL registration, only then by restarting the program that needs that library to work properly.

DLL files are software libraries that can be used by programs that require them. Usually all along the process of program installation you also install all the required settings, anyhow in some cases something can go wrong, or there can be erased some programs that are used to clean up and lighten your operating system.

How to register this type of file on my personal computer?

After downloading the library in most cases it is best to copy it inside the system directory, and then you need to register it the way it can be used by all programs that need it.

So first copy the downloaded file within the directory, whether you use Windows XP or Vista the DLLs are usually copied to C: WindowsSystem32. The exact location depends on the disk drive where the operating system is installed by installation directory choice, however if it is not found you should try the system32 folder with the search function of Windows.

As we were saying the DLL must be registered by making a click on the Start button, here you will have to put the command as follows:

regsvr32 [filename to log]

For instance, if the DLL download is RLD. DLL command to use is:


After entering the command click the OK button and you will receive a message informing you about the registration of the library. Now try to run once again the program that didn’t work before, if everything went smoothly so it should start to work correctly.

How do I download these files for free of charge?

Of course, the DLL libraries can be downloaded from the internet, in my opinion the most rapid and safe method is to use the service from fix4dll, through which you can search and download missing libraries. The above mentioned DLL file library is regularly updated with the newest versions of DLL files to meet users’ needs and to lend them a helping hand to fix their issues. And if there is a need for you to resolve any issue with just a few clicks you have the opportunity to buy a DLL file fixer from the main menu of this site. However, it is of high importance to be aware of your personal computer security. You should always ensure that files in your system are genuine. DLL files are important complements to the correct performance of any application. Despite at the same time, you should be very careful regarding DLL files because, as it’s true with every executable file, a virus or a Trojan could be hidden in one of these files. So search for DLL files at a reliable source such as fix4dll, where you can download your missing DLL file free of charge from its extensive library that is accessible in alphabetical order.

What Is Access Control System

Access Control SystemEntrance access control security management system is a new modern safety management system, which combines computer automatic identification technology and modern safety measures as a whole, it involves a lot of new technologies in electronics, machinery, optics, computerte chnology, communications technology, biotechnology and so on. It is aneffective measure to solve the entrance implement security management for importantsectors. For a variety of confidential sectors, such as banks, hotels, parkinglots management, computer room, armory, confidential room, office, intelligence community, factories and so on.

Access control system goes beyond the meredoorway and key management, it has evolved into a complete access controlsystem. It plays a larger role in a safe working environment, personnelattendance management and other administrative work.

Access control system categories

There are different types of access controlsystems according to different classifications

a. According to the designprinciple

1, the controller comes with a card reader (identification device)

This design flaw is the controls shall beinstalled outside at the door, some of the control lines must be exposed to the outside, insiders do not need cards or password can easily open the door.

2, controller and card reader (identification device) Split

Such a system controller installed in the room, only a card reader input lines exposed outdoors, and all other controllines are in the room, and the card reader is transmitted digital signal,therefore, If no effective valid card or password no one can enter. Such systems should be the user’s choice.

b. Classification of communication way

1. Stand-alone control type:

These products are the most common for small system or the centralized installation location unit. Usually use RS485 communication. The advantage is that small investment, dedicated communication lines. The disadvantage is that once installed, it can not easily change the position of the center of management, not easy to achieve network control andremote control.

2. Network type:

Such high-tech products, but also rare,only a few companies molding. It uses a commonly network communication TCP / IP protocol. Advantages of such a system is the controller and the management center via LAN to transfer the data, the management center position can be changed at any time, without re-wiring, easy to implement network control orremote control. Suitable for large system or geographically dispersed units. Disadvantages of such systems are part of the communications system stability rely on the stability of the local area network.

C. By means of identification

1. Password identification

Password verification: identified outprivileges by checking a password.

Password keyboard – These products are divided into two categories: one is ordinary type, one is out of order Keypad(numbers on the keypad is not fixed, from time to time changes automatically).

Normal type – Advantages: easy to operate,no need to carry a card; low cost. Disadvantages: only accommodate three passwordswhile easily leak, security is poor; no access to records; only one-waycontrol.

Shuffle Keypad (numbers on the keypad isnot fixed, from time to time changes automatically) – Advantages: easy to operate, no need to carry the card, the safety factor is slightly higher. Disadvantages: easy password leak, security is not high; no access to records; only one-way control. high cost.

2. Card identification (card reader)

Card identification: to identify the access privileges by reading the card or card with a password mode, according to thetype of cards is divided into magnetic card and RF card.

Magnetic card – Advantages: low cost; oneperson one card (+ PIN), security in general, could be linked computer, thereare open records. Disadvantages: cards, equipment wear and tear, shorter life expectancy; card easily copied; not easy bi-directional control. Card information vulnerable to external magnetic field, so that the card is invalid.

RF card – Advantages: cards, contactless device, convenient and safe to open the door; long life, the oretical data atleast ten years; safe, could be linked computer, there are open records; can achieve bi-directional control. Card difficult to be copied. Disadvantages:high cost.

3. Biometrics identification

Biometrics: Biometric by inspectors and other ways to identify entry and exit. Such as fingerprint, hand geometry type,iris pattern, facial recognition type, as well as finger vein recognition type. Pros: From the perspective of identifying excellent safety; no need to bring the card. Disadvantages: high cost. Recognition rate is not high, high environmental requirements, for users requiring high (such as a fingerprint cannot be scratched, swollen eyes are not bleeding, his face can not have hurt, or how much beard), inconvenient to use (such as facial recognition and iris type, installed certain height, but the user’s height different).

Access control components

a. Access Controller

The core of the access control system, the equivalent of a computer CPU, which is responsible for the entire system input,output and storage of information processing, control, etc.

Card reader (identification device) – Such as (Kiosk card reader SK-288-K001)

Reading card data (biometric information) devices.

b. Electric Lock

Lock the door – the execution unit of access control system. Users should be based on the material of the door, out requirements needs to select different locks. There are the following types:

(1) Electromagnetic lock: electromagnetic lock is to open the door after power off, meet fire safety requirements. And equipped with a variety of mounts for customers to use. This lock is suitable for one-way doors, glass doors, fire doors, folio electric door.

(2) Anode lock: anode is to open the door afterpower off, meet fire safety requirements. It is installed in the upper door frame. The difference from the electromagnetic lock is that anode lock issuitable for two-way doors, glass doors, fire doors, and it itself has magnetic door detector can detect the security status of the door at any time.

(3) Cathode lock: Usually cathode lock is to open the door when energized. Applicable one-way doors. Cathode lock installation must be equipped with UPS. Because when power off the cathode lockis to lock the door.

c. Card

The key to the door. You can print the cardholder’s personal photos on the card, combine the door card and badge.

Other equipments

Exit button: Click to open the door appliance, suitable for the situation to go out unlimited.

Magnetic: Used to detect the door safety/switch state, etc.

Power: the entire system power supply equipment, divided into ordinary type and backup (with battery).

Working Principles

Card reader reading a smart card information(card number) of a cardholder, and then convert to an electrical signal to the access controller, the controller according to the received card number, the cardholder is determined by whether the software over this period can beauthorized to enter the door, according to the result of the determination tocomplete the unlock, remain blocked, etc. . For networked access control system, controller also accepts personnel information transmitted from the management computer, and corresponding authorization information while transmitting card recording information to your computer. A single controller can be composed of a simple access control system, used to manage one or two doors. A plurality of controllers are connected to form the entire building access control system via a communication network with computers. Computer with access control systems management software, which manages all system information analysis and processing.

How To Know About Children Activity Online Using Serial Loggers

How To Know About Children Activity Online Using Serial LoggersDo you have a need to monitor one of your computers? Are you worried about an employee’s work activities or perhaps you want to be very sure about who your child is talking to online? If you are wondering about the best way to find out this information then keyloggers could be an easy answer for you.

There are a couple of options so read on for the reasons we think you should choose a hardware keylogger over a software keylogger.

Hardware keyloggers are super simple to install. They just need to be plugged into the computer between the tower and the keyboard. There are internal options as well if you think the computer user may know what a keylogger is if they see it. There is no other access to the computer required, just the ability for a quick plug in. If you were to choose the software option, you would need to have access to the computer’s password to be able to complete the install.

There is no way to detect a hardware keylogger. It won’t slow don’t the computer when it is being used; it simply records the keystrokes and stores them in its own internal menu. Savvy tech users could discover a software option if it was installed. With this option sometimes the software installed will even show up on the start menu or the task manager! Not the best way for it to remain undetected. Imagine that your anti-virus software runs its usual safety checks and alerts the user to the keylogger you’ve installed! Again – not how you want this to work for you.

Following on from the previous point, hardware keyloggers do not affect the stability of the computer they are installed on. They don’t use the computer’s internal memory to complete their logging of the keystrokes and therefore will not create any type of lag on the computer they are installed on. This is especially good if the computer is a little bit older and starting to slow down anyway.

Something particularly advantageous about a hardware keylogger is its ability to record the keystrokes before the computer is actually up and running. You know all those passwords that are typed in when you first start up a computer, before your operating system has booted up? This type of keylogger will have a record of those keystrokes where the software option would not start recording until the computer was completely turned on and the OS in service. This is a big plus.

Your hardware keylogger will be able to work with just about any operating system. This makes it a great choice if you plan to use it to monitor multiple computers over time.

If you’re looking for a simple solution that doesn’t require you to be too tech savvy, then a hardware keylogger could be just what you need to monitor your home or business computers.

Lenovo Thinkpad T61 Laptop Reviews

Lenovo Thinkpad T6114-inch widescreen ThinkPad T61 widescreen is very similar with the past ThinkPad T60, there is almost no difference between them from the appearance. Only a few small details (such as the body of the Logo) has changed, but the most important change is internal body changes, where we observed the naked eye.

In the bottom right of the ThinkPad logo, is the screen lock and open key; at the center-right, are 3.5mm microphone and headphone jacks; on the left a little green organs, which control the entire ThinkPad wireless resource on / off, including Bluetooth and WiFi; the far left is the IEEE 1394 small jack.

ThinkPad except for one type of removable CD/DVD ROM drive, on the right side of drive is a USB 2.0 port.

Far left is the cooling fins; then is a VGA video output port; then is the RJ-11, RJ-45 ports, two USB slots, and a PCMCIA expansion slot + SD card reader total structural design.

Although the ThinkPad T61 is a dual-core model, the operating system is also equipped with Vista Business, but not with the new PCMCIA Express expansion slot specifications, it uses the old PCMCIA. Also in the bottom PCMCIA slot, there is another SD card reader.

For today SD, mini SD, micro – SD flood situation, this is quite practical.

After remove the battery for T61, the back is actually very simple, there were only two power supply hole and heat dissipation fin two parts.

In addition to the bottom vents scattered throughout, there are user replaceable components are available, such as RAM, hard disk … and so on, have been reserved space and a good mark.

Due to use 9 cell battery, so behind the fuselage will highlight a piece.

Although the battery combined with the body, there is a slot to hold it, but still remember to lock the battery to wear, so as not to loose causing power outages.

At the same position with the cover tag, is also an IBM ThinkPad logo. Before you view the fingerprint reader, you can see the drivers from here if you use this laptop: lenovo t61 drivers.

Above the logo, it is the fingerprint reader.

Below the middle screen with a row of lights, including wireless signal switch state, CapsLock and NumLock and display, and hard drive, power state, etc…, all these lights to tell the user that the current operation of the computer how is it.

At the same time we can see, ThinkPad adjust the volume keys and ThinkVentange hotkeys are in this position.

Fortunately, some of the ThinkPad specific series, in addition to the red dot, but also prepared touchpad. The touchpad slip up quite smoothly and friction on the surface of the stomach and its not too big. Slip up, mouse movement speed and accuracy, also with finger stroke quite fit.

For keyboard, ThinkPad T61 still offers unparalleled control feelings. Yes, ThinkPad series of notebook keyboard has the flawless proportions. Key size, stroke, feel is perfect, the layout of the keys also take care of most of the user’s habits.

The redesign of the cooling system, also one of the important measures to improve ThinkPad T series model. T61 add a lot of heat at the bottom of the body. It is because of the heat dissipation improvements, T61 using low-speed cooling fans, at the same time Lenovo promote its T61 is the quietest T Series notebooks ever.

Logitech H600 Wireless Headphones Reviews Wireless Free Life

Logitech H600 Wireless HeadphonesThe world’s most famous computer peripherals suppliers Logitech is also famous in PC multimedia entertainment design manufacturers. With the development of multimedia entertainment, Logitech followed the market pace, attaches great importance to the game, multimedia and network audio-visual AIDS develops. In order to adapt to the current consumption trend, greatly accelerate the process of product diversification and comprehensive, its products also covers the game consoles, music players, mobile devices and home entertainment system, etc.

From the development trend of audio products, the wire is a very important factor bound to enjoy freedom of music. “Get rid of the shackles of cable, using wireless way to enjoy music” is the development direction of public expectations. In the current variety of wireless transmission protocol, 2.4G holdings are still high.

Logitech Wireless Headset H600 overall appearance is very fruity, use the black unit as the prototype, the shell surface through careful polishing processing, very simple, cool, like a jet. A blue circle on the headphones unit shell decoration, very conspicuous. And is very match with pure black raven headphones shell. The right side of the silver Logitech LOGO is very conspicuous.

Logitech Wireless Headset H600 done “weight” and “strong” to a very good balance, h600 overall is not heavy, but the work of the various parts are in place, not the kind of “touched on the reimbursement” products. In addition, h600 using on-ear design, thin sponge and can be rotated moderately active earmuffs makes very comfortable to wear.

H600 head beam section and headset airframe material is qualitative different, is not a hard plastic but a plastic material with both elasticity and toughness. Logitech clearly takes into consideration the size of the wear and comfort, and such design can effectively prevent the head beam fracture accident caused by the large head size.

In order to facilitate receive, the wireless headset h600 using a foldable design, can significantly reduce the volume. Also H600 comes with noise cancellation microphone to provide clear voice quality, and can be hidden when not needed. Also h600 use laser trimming drive unit to avoid distortion, with even better sound performance.

Logitech Wireless Headset H600 power part with up to six hours of battery life, the key part is very concise and practical, a power switch, a microphone mute switch and accessories to provide a USB charging line, and a USB signal transmitter.

H600 voice is very loose peace, smooth natural. Sound is very clean, good signal to noise ratio.H600 voice slightly slim, tri-band distributed roughly balanced, high-frequency relatively thin, extending good and with good brightness, did not feel the bleak nausea.

H600 low-frequency texture loose, diving is good, this type of low frequency is mainly helps create a feeling of comfortable and peaceful atmosphere. It does not emphasize the rhythm of the violent and strong strength, but show current music in a very gentle way. Intermediate frequency part has slightly conservative, voice is not rich, but soft style makes female interpretation is also very characteristic, not the kind of indifference sound appealing good.

H600 high-frequency line feeling clear and bright, the overall density is not high, slim body, balanced tuning it to a variety of music has certain flexibility, and individuality is a not very bright, but yet practicality headphones.

Moreover, a higher noise ratio also make it very advantageous during a voice call, a voice call will not be substantially interfere with the noise. This design is very good. H600 is a long time for listening to music headphones to listen for a long time not tired a long time will not make people feel irritable.

Repair Involved In A Personal Computer

parts inside a PCIn this article I will explain about all the parts inside a PC. I will also talk about replacing or repairing them one by one in order to bring the computer back to life.

A PC consists of many parts that can be repaired or replaced. This includes a casing that is the outside of the PC. A PC usually has three essential cables which include a power cable, a keyboard cable and finally a mouse cord. If we look inside the PC we see many parts. The first one is called power supply where we connect the power cord. This unit power distribution function inside a computer system. The power supply connects to a blue or green color board normally known as motherboard which is also called as logicboard, a term introduced by Apple in their Mac desktops and MacBooks. As the name suggest, this board works like a mother that help connect all PC parts together. The next part inside the box is the RAM (Random Access Memory). This part helps computer run its programs as long as the computer us turned on. The number of RAM sticks can range from 1 to 6. The next part is the CPU. The CPU normally has a fan and a heatsink (which take away heat from the CPU with the help of fan) on top of it. CPU is usually confused with the PC box or tower. CPU is the part that processes all operations for example all programming is executed inside the CPU. The next one is the graphics card. The graphics card has two types. Some PCs come with a built-in video chip (graphics adapter). This part actually displays all the programming or processing results on the computer screen. There are some extra ports in PCs that can be used to install a dedicated graphics card that does the same function like a graphics adapter i.e. displaying output on the screen (I will explain later what a monitor is).

Other parts that can be installed in these ports could be a modem, a USB splitter, a sound card (most of modern computers are coming with built-in sound card), SCSI card or a wireless PCI card (used to connect the PC to a router without wire for Internet connectivity). The other part that is most important is called a hard drive. The hard drive stores all data, programs, files like photos, documents, videos and other data. Old computers also come with a device called CD or DVD drive. This is used to copy data from and to a CD or DVD disc. This device can also be used to install programs on the computer. A Floppy diskette drive was part of very old computers. This was widely used when there was no CD or DVD drive. It is not coming with new computers anymore. There are some peripherals that are partially parts of a PC system. These include USB flash drives, Printers, Scanners and some other parts. The USB flash drives can be connected to the USB port of a PC. These flash devices are used to store data for mobility purpose. The printers are used to print, scan and send faxes. The last but not the least is the monitor that shows all the results and outputs. This device connects to the video adapter or graphics card on a computer.

Now let me talk about repairs. A Power supply can be one of the several reasons of no power in the PC. When there is no power, the PC can be brought back to life by replacing its power supply. If a motherboard is dead, there will be no life in the system. This could be repaired or replaced. About RAM, because there are more than one RAM slots, usually one or two chips might have problem so those can be replaced or if there is a problem with the RAM slot then a quick solution would be to install bigger RAM in one of the good slots. The CPU can be replaced in most PCs. The same can be done with heatsink or fan. Hard drive can be changed or repair and fixed which can lead to data recovery. CD or DVD, Floppy drive, graphics card, or sound cards can be replaced.

In this article, I talked about all parts of a PC and a possible repair or replacement to fix a computer system.

Types Of Projectors And Their Use

CRT ProjectorEvery person watches films. They are an integral part of our culture. Today, there are many media through which one can watch films or any audio visual content, but earlier there was only one source. There was only one place where one could watch films. And that was a movie theatre. Even today there are multiplexes, but the number of people going to watch movies in a single screen cinema theatre has lessened.

Typically the screening of a film is a technical process. A person projects light from the source onto the screen. This light is basically a combination of motion images called a movie. The device through which this light is projected onto the big screen is called a Projector and the technician operating the projector is known as a projectionist. So basically a projector is an optical device projecting an image onto the projection screen.

A projector is not just limited to watching a movie. Many business meetings and client presentations are solely based on projectors, meaning that it becomes an essential element in presenting a client with a product or service for that matter. So it is a necessity for every company to have a projector in this era. And projectors are not that costly as they used to be a decade earlier. So whether it’s business utility or a liability, projectors can easily be obtained these days.

There are Basically Three Types of Projectors:

CRT Projectors: These projectors use bright cathode ray tubes as the projecting element much like the old television sets. The main drawback with these are that they are very bulky and one also needs to change the cathode ray gun every now and then is not cost efficient

DLP Projectors: The digital light processing is a display based on micro-electro- mechanical technology. The device used is known as DMD which means digital micro mirror device. It was developed in 1987. There are two primary methods by which they create a color image, one is by single chip DLP projector and the other is 3 chip projectors.

LCD Projectors: Liquid crystal display projector is a cheaper option as compared to the other two. It is ideal for home viewing. It is a type of video projector where images can be viewed on screen or even fat surfaces.

Purchasing a projector can be a big decision. If a person has a small company, it is preferable not to spend a lot of money on projectors until and unless one requires it very frequently. Even if one decides to buy a projector, it would be better to rent the same model one is planning to purchase and be absolutely sure of its quality. And if one requires it once a month or so, renting a projector might be the most cost efficient option to consider.

Renting a projector these days is very easy. It doesn’t matter where a person lives, he/she can easily rent a projector with a little research on the internet. Generally these are very easy to install unless it is not a CRT projector installing which might be a difficult process. For instant if a person lives in Australia, say, Perth, he/she could easily rent a projector in Perth just by searching for it on the internet.

Some Factors to Look at Before Buying a Projector

  • Aspect Ratio if the purpose is watching a movie.
  • Resolution
  • Brightness
  • Contrast

These are some of the most common factors to be considered before buying or even renting a projector. But these are not the only factors. One needs a thorough research before investing on projectors when it comes to buying electronic devices.