04/10/2022
At here we describe computer and deliver the main information about it.
first let us see what is Computer?
Computer has many definition about computer but here we define few of them.
1.A computer is a programmable device that stores, retrieves, and processes data.
2.A computer is an electronic device that manipulates information, or data. It has the ability to store, retrieve, and process data.
3.A computer is a programmable electronic device that accepts raw data as input and processes it with a set of instructions(Programs).
Computer retrieve that data in human readable form.it means human can easily understand.but computer work on 0's and 1's.
4.Parts
The basic parts of a desktop computer are the computer case, monitor, keyboard, mouse, and power cord. Each part plays an important role whenever you use a computer.
5.Operations of computer.
let see What is Operation?first.
an action that is carried out to accomplish a given task.
There are five basic types of computer operations: input, process, output, storing and control.
(I). Input
input is a process by which a user enters any type of data into a computer system.
Input is the first basic operations of computer system. Input devices are used to provide information to the computer.
When you type on a keyboard, pressing your individual keys converts the letters - A, B, C - into binary code that is sent to the system's processor or CPU.
The CPU then parses this code and produces an appropriate output based on what was input.
(II)Process
The task of performing calculations and comparisons are known as process.
The unit in Computer System that is responsible for processing is ALU (Arithmetic and Logical Unit). ALU is the place where actual ex*****on of the instructions takes place during the processing operations. All calculations & comparisons are made in the ALU.
(III)Output
Any information processed by and sent out from a computer or other electronic device is considered output.
Example:-
Output is anything viewed on your computer monitor screen, such as the words you type on your keyboard.
(IV)Storage
Storage is a mechanism that enables a computer to retain data, either temporarily or permanently.
Store the information and instructions to be processed.
(V)Control
Control operations are responsible for coordinating all the other operations on the computer system.
The CU carries out the control operations, ensuring that data is properly transferred, processed and stored.
It retrieves and decodes each instruction in memory, and then uses this information to issue the signals necessary to coordinate operations across the computer system.
The CU does not process or store data, but it controls all communications and synchronizes all operations.
