Computer Definition With Generations || classifications || Characteristics || components

Computer Definition:

With Generation , Classifications , Characteristics, Components.

Computer Stand for/ Full Form:

Commonly operating machine purposely used for technical & educational research.

Computer Definition:

Computer is an electronic machine/device., which is developed by “Charles Babbage” hereby 19^th Century.

It take inputs data from user or input devices (Keyboard, Mouse etc.) store and processed it and produces output.

Components of Computer:

1 Hardware 2 Software

Input devices (Keyboard , Mouse etc) Application S/w

Output devices (LCD, Speakers etc) System S/w

Storage devices (RAM, Hard disk etc)

CPU (Central Processing Unit)

Characteristics of Computer:

1 Speed

2 Accuracy

3 Storage

4 Quick decision

5 Repeated Capability

Generations of Computer:

1^st Generation used Vacuum tube technology and it introduced in 1946.

2^nd Generation used Transistor technology and it introduced in 1959.

3^rd Generation used ICs (integrated circuits) technology and it introduced in 1965.

4^th Generation used LSICs (Large scale integrated circuits) technology and it introduced in 1971 to 1985.

5^th Generation used Onwards technology and it introduced in 1985 to till today.

Classifications of Computer:

On the basis of classifications of computers are classified in three categories.

1 By type 2 By Size 3 By Purpose

1 By type

It is based on three categories

1 Analog: It is used for measurement like check the speed of any vehicle and Blood pressure checking etc. It provide result in form of graph it very difficult to understand like this…

pic

2 Digital: It used for binary (0 1) concept based on quantity etc. It represent the measurement in form of number.

pic

3 Hybrid: It is combination of Digital & Analog computer work.

2 By Size:

It is divided into four parts.

1 Micro Computer: Micro Computer are that which are very small computers, which are used in personal work. We are call it Personal Computer PC. We are used it in our homes offices etc. like mobile, laptop etc.

2 Mini Computer: It is types of Computer this size is larger than Micro Computer. It contain more than 1 processors and its speed is greater than microcomputer. This types of Computers are used in Bank Office etc.

3 Mainframe computer: It is type of Computer, this computer size is larger than Mini and Microcomputer. Its speed is greater than microcomputer because it have many microprocessors. It used in large organizations Like Scientific Organization etc.