INTRODUCTION TO COMPUTER
The computer system or computer:-
Computer is an electronic device that accepts data from the user as input, processes the data by performing calculation and operation on it, and generates the desired output results. Computer performs both simple and complex operation, with speed and accuracy.
On other hand Computer is an electronic device (Machine) which manipulates the data that is arithmetic and logical data and also controls the system.
The term computer is derived from the Latin word “Compute” which means “to calculate”.
Part of computer system. i.e. Components:-
Computer system consists of four parts viz-1. Hardware
2. Software
3. Data and
4. Users.
The part of computer system can be shown by the figure given below.
(picture:- The Computer System)
1. Hardware:-
Hardware consists of the mechanical parts that make up the computer as a machine. The Hardware consists of physical devices of the computer. The devices are required for the input, output, storage, and processing of the data. E.g. Keyboard, Monitor, Hard Disk Drive, Printer, Processor, Motherboard etc.
Special Notes:- we can see and touch the computer Hardware’s. All the physical part of the computer system is called hardware of computer system.
2. Software:-
Software is a set of programs and program is a set of instructions, so Computer software is a set of instructions that tells the computer about the task to be performed and how these tasks are to be performed. A set of programs and documents are collectively Called Software.
The Hardware of the computer system The hardware of the computer system cannot perform any task on its own. The hardware needs to be instructed about the task to be performed. Software instructs the computer about the task to be performed. The hardware carries out these tasks. Different software can be loaded on the same hardware to perform different kinds of tasks.
3. Data:-
Data means the communication carrier among each computer and computer parts. Data are isolated values or raw facts, which by themselves have no much significance. For example, the data like 25, April, and 1990 just represent values. The data is provided as input to the computer, which is processed to generate some meaningful information. For example, 25, April and 1990 are processed by the computer to give the date of birth of a person.
Special Notes:- Neither we can see (by our eyes) nor touch the computer data. All the information we give to the computer as input is the data also the output generated by the computer is given by the help of data.
Users:-
Generally the part of Computer Users means people who write computer programs or interact with the computer system. They are also known as skinware, liveware, humanware or peopleware. Programmers, data entry operators, system analyst and computer hardware engineers fall into this category. The Computer system is always used by a people directly or by the help of some automatic instructing programs or softwares.
Special Overview:-
Two parts out of four of a computer system can be seen and touched which is Hardware and User, and rest two parts of a computer system can’t be seen and touched that is Software and the data.
Author:- Sultan Ansari
