The most prevalent machine...

Computers are the most prevalent information analyzers to date.they have the capability to handle any amounts of data as compared to what humans could do in the last few years. Computers are fast replacing humans in most sectors since they make work much more faster and easier.

Care when working on your pc..

When working on your PC it is always wise not to spend long hours on it. Most computers emit glares that are harmful to your eye so make a pint of purchasing an anti-glare screen or spectacles. Above all, take intervals of time between the sessions so that you avoid fatigue...

How the hard disk crash occurs

Usually, when your computer won’t start, it is due to problems with the hard disk. This vital component stores windows files and all your documents. If the windows files are damaged, your pc may not be able to load windows.

The hard disk consists of a ‘read/ write head which hovers over magnetized disks. The distance between the head and the disks is less than the thickness of human hair. If the read/write head touches the disk the result is a ‘head crash’ – a damaging collision between the head and the fast spinning platters. A head crash can destroy large amounts of data on the hard disk, including the data needed to get the computer working again. Solving this problem is complicated, and should only be attempted once all the other possible causes have been addressed.

Top eight general watch-outs when using a computer.

1.Repetitive strain Injury (RSI) is muscle strain due to repeated actions. Home PC users are unlikely to experience problems but a good posture and typing technique is still essential. When working at your PC, stand up, stretch and move about regularly.

2.Always use the shut down command from the start menu before turning the power switch off. Never turn the power switch off windows is running. Some newer PC’s automatically switch off power when shutting down.

3.If your PC was not shut down properly the last time you used it, a message will flash up the next time you switch it on. If this happens, allow your computer to boot up, and then restart it immediately. This ensures that the shut down mistake has no lingering after effects.

4.Copying programs from friends is not obtaining software for free- it is stealing. Unless you have purchased a license, you are breaking copyright laws and could be prosecuted.


5.If you intend to delete (or restore) a folder from the recycle bin, remember that windows will delete (or restore) the entire contents of the folder, not just the file you are interested in. Be sure you want to do this before proceeding.

6.Be careful when buying software on a disk. Ensure it comes from a reputable source and that the packaging has not been tampered with. If the disk has been used there is a chance that it carries a virus. Remember, pirated software is illegal and greatly increases the chances of catching viruses.


7.Never use ordinary household spray, polish or liquid spray cleaners on your keyboard. If liquid gets between or under the keys, it can damage the keyboard.

8.When you use a key combination that involves the ctrl or Alt keys with a letter or function key, press the ctrl or Alt key first. Otherwise, you may issue the wrong command.

How to get the most from your pc.

The better you understand your computer, the more you will get out of it. Knowing what each element of the PC does, and how to set it up properly, will get you up and running. And good housekeeping practices will ensure that your pc functions efficiently. Once you master the basics, you will have laid the foundations for successful computing.

Setting up your computer

Your computer will be a valuable tool for all family, so it’s worth taking time to plan your computer space and system well, to ensure it is both easy and safe to use.

Ideally, it would be best to convert a small room, or a corner of a larger one, into an office, so all the family can use the computer without being disturbed. When selecting an area, check that there is adequate space and several mains sockets, not just for your equipment but for a desk lamp, too. If you will be sending faxes from your computer, or connecting to the internet you also need to be near a telephone point. But, you can also opt for a wireless modem.

Set a side some time-3 to 4 hours- to set up your computer properly. Think carefully about how to arrange your area, as a poorly laid out system will be irritating and may even prevent you from using your computer to full.

It is a good idea to spend some time reading those manuals, too.  You need to know where to plug-in the cables!

Computer furniture choice

1. Invest in a proper computer desk. You can alter the height of the monitor and keyboard, and tuck the keyboard away when not in use.
2. Buy an adjustable chair, which all the family can adjust for good posture and maximum support.
3. If your feet don’t rest comfortably on the ground, buy a footrest.

Six Points to note when setting up your computer

• Your pc/ computer desk should be a comfortable height for typing so that the lower parts of your arms are parallel to the floor
• Legs should remain uncrossed and knees should be lower than hips.
• Feet should rest flat on the floor.
• An adjustable chair will support your back and can be adjusted for each family user.
• If you find yourself leaning into the monitor, increase the scale at which you are viewing your document.
• Your eyes should be at an angle of 15 degrees to the centre of the screen.

Naming and placing the parts of your computer

Your PC’s hardware comprises all parts you can actually see and handle. Knowing exactly where to place each of these elements will ensure a safe work area.

1. Monitor

This houses the computer screen. Position your monitor to avoid reflections, but avoid facing a bright window yourself as this may lead to eyestrain.

2. System unit

This is the part of your computer that connects everything together. Leave space so that you can plug in the cables easily. Don’t leave cables trailing.

3. Keyboard

Make sure the keyboard is on a stable and level surface within easy reach. Leave enough space in front for hands and wrists. Ensure that the desk at the correct height.

4. Mouse

Place the mouse to the left or right of your keyboard to minimize arm movement.

Use a mouse mat to create the correct amount of friction for the mouse, and be sure there is room to move the mouse back and forth.

5. Printer

Position your printer near the system unit. Make sure there is sufficient space around it for loading the paper trays.

6. External speakers

For the best sound quality, speakers should be well spaced apart at desk level or apart at desk level or higher, not just pushed under the desk. Ensure that the computer is situated so that others are not disturbed by computer games or alert sounds.

Hardware and software

Understanding how these two components operate is a key to successful computing.

Hardware and software work together to allow you to perform the wide variety of functions possible on your Pc.

Hardware is the actual ‘body’ of the computer system, comprising the system unit / central processing Unit (C.P.U) and all the elements that you can plug into it, such as the keyboard. Your computers’ hardware determines which type of operating system you can use. PCs made with intel processors, for example, cannot run the Apple Macintosh operating system.

Software is the ‘thinking part’, or brain, of your computer, putting all the hardware to work. The most important piece of software is the operating system. By translating your instructions into a language the hardware can understand, the operating system lets you communicate with various computer parts and control how the computer and its accessories work. Windows xp, vista and windows 7 are the most popular operating systems for PCs. An operating system is so important to the workings of a computer that, without one you cannot open any files, use a printer or see anything on the screen.

However, in order to perform specific functions, such as editing a report, playing computer game or keeping a check on your household spending, your computer needs to use specialized software, called programs. There are thousands of programs available; each designed to perform different kinds of tasks. Programs enable you to do anything, from writing formal letters and compiling spreadsheets, to editing digital imagery and even making your own films.