Basic Components of A Computer System

 Basic Components of A Computer System/ Block Diagram

1. Input Device

Input Device is the device through which we can input our data or instructions into Computer. Computer has many Input Device, it directs the brain to Devices Computer, what does it do? Input Device is available in many forms and everyone has a specific purpose. For typing we have the keyboard, which we type in our instructions.

"Input Device is the device that gives our instructions or commands to the computer's brain, cpu (C.P.U.). "

There are several types of Input Device, which are as follows -

Keyboard

Mouse

Joystick

Trackball

Light pen

Touch screen

Digital Camera

Scanner

Digitizer Tablet

Bar Code Reader

OMR

OCR

MICR

ATM etc.

Read  Input Device Full Details here

2. C.P.U.

The full name of C.P.U is Central Processing Unit. Its Hindi name is the Central Processing Unit. This is the most important part of the computer. That is, without this, the computer system can not be completed, so all the devices are connected, such as Keyboard, Mouse, Monitor etc. It is also called Mind of Computer. Its main function is to execute the programs (Execute), and also controls the functions of all parts of C.P.U Computer, such as Memory, Input, Output Devices.

C.P.U (Central Processing Unit) has three parts -

A.L.U.

Memory

C.U.

(a) A.L.U. (Arithmetic Logic Unit)

The eritmatic and logic unit is summarized as A.L.U. This unit has arithmetic functions (add, subtract, multiply, part) and logical operations on data. Takes direction from the A.L.U Control Unit. It receives data from memory and returns the information after processing to the memory. The speed of the work of A.L.U is very intense. It does approximately 1000000 calculations per second. It contains an electronic circuit that is capable of calculating binary arithmetic.

(b) Memory

It stores the instructions received by Input Device in the computer where it also goes to the memory of Computer. In humans, there are many things to remember, so are memory. This memory is an integral part of C.P.U., it is a storage device. So it is also called main memory of computer, internal memory, or primary memory.

"The location of the computer where all the information, numbers or instructions are kept stored and called memory."

(c) C.U.

C.U. The full name of the control unit is. C.U. Controls and operates the functions of the hardware. It controls Input, Output, as well as Memory and A.L.U. Intermittently transmits data from the memory to receive instructions for executing this program. By converting instructions into Electric Signals, it reaches the appropriate devices.

3. Output Device

Output Device is the device that provides data input by User as Result.

Results obtained from the computer are obtained by the Output Device, these results are usually presented to the user by the display device (screen) or printer. Mainly, the information received in the form of Output can either be seen across the screen or print from the printer to the page or can use the speaker as the output to listen to music, Output Device is of several types like -

Monitor

Printer

Plotter

Projector

Sound Speaker