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 universal serial bus is referred as USB. It is a high speed serial bus that transfers data at higher rate than that of a serial port (port that allows serial data transfers). USB allows interfacing several devices to a single port in a daisy chain for support in a wide range of peripheral such […]

Printers are commonly used output device. The most common method of producing human readable output is using printers. Printed output is usually referred to as hard-copy and they provide information in a permanent readable form. They produce printed output of results, programs, and data.
We can use different kinds of printers with computer:

Character Printers
Line Printers
Page […]

Plotter is an output device that draws pictures on paper based on commands from a computer. They are used to produce precise and good quality graphics and drawings under computer’s control. They use ink pen or ink jet to draw and other single color or multicolor pens can be used. The pens are driven by […]

Microprocessor is a square chips in which millions of components are integrated together in different layers. The main characteristics of a microprocessor are the widths of its internal as well as external address bus and data bus, clock rate and its instruction set. The first commercial microprocessor was the intel4004 which appeared in 1971 was […]

Liquid crystal display device is commonly known as LCD. It is a liquid crystalline material squeezed in between two glass or plastic plates. The front plate contains coating of this film and is transparent and conductive. The back plate is reflective. Its segments are in the shape of desired characters. On the back plate an […]

A CRT (Cathode ray tube) display unit is a commonly used output device. The VDT (Visual Display Terminal) unit contains CRT for visual display unit displays the data and information received from the computer in alphanumeric characters and graphs. CRT being an output device can also perform limited input function when used in conjunction with […]