Any personal computer, laptop, or notebook is as good as dead if it has less memory or RAM (Random Access Memory). RAM is a part of main memory and it is called main memory as we can randomly and quickly access any location in memory. It is used to store instructions waiting to be obeyed, […]

Almost everyone has a personal computer these days. Most of the people have changed their old personal computers to the advanced notebooks or laptops. So now we depend on saving our works to a computer machine. Every project and every assignment are saved in your computer as well. From the school and/or college students to […]

A complete set of your personal computer must include all of the important devices and equipments. If you are buying a brand new set of computer than mostly you will get it in a cheaper price comparing to buying the parts as replacement. One good example would be a printer. When you buy a printer […]

Magnetic tape is a serial access type storage device made up of Mylar plastic material coated with magnetic material (iron oxide) only one side of the tape. Magnetic tapes are used for backup in servers, workstations, and large computers. A high speed magnet is tape is used for hard disk backup which takes few minute […]

In the case of computer we can find many storage devices such as RAM, ROM, hard disk etc. But these are found inside the CPU of the computer used to store different mass of instructions, data, programs etc. and are simply called as internal devices. These devices help to store data, instructions, etc. temporarily like […]

The input device which helps to read the bar code is called barcode readers. This method uses a number of lines of varying thickness and spacing between them to indicate the desired information. An optical barcode reader can read such bars and convert them into electrical pulses to be processed by a computer. Bar codes […]

Magnetic Ink Character Reader (MICR) is an input device widely used by banks to process large volume of checks and deposit forms written everyday. It consists of special ink called magnetic ink (i.e. an ink that contains iron oxide particles) is used to write characters on the check and deposit forms to be processed by […]