Types of computer

What is a computer

A computer is electronic device that can perform verity of operation in accordance with the set of instruction called program

Types of computer

Digital Purpose wise Size and performance wise Embedded Micro computer Minicomputer Mainframe computer Super computer Analog Hybrid

Digital computer

Any of a class of devices capable of solving problems by processing information in discrete form . It operates on data, including magnitudes, letters, and symbols, that are expressed in binary form using only two digits 0 and 1.

Digital computer

DIGITAL

PURPOSE WISE PERFORMANCE & SIZE WISE

Purpose wise

It can be classified into two categories

1. Special purpose computer:- it is design to perform only specific task.

2. General purpose computer:- it is one that can store any program and can be used in countless applications.

Size and performance wise

They are classified into four major components:-

1. Micro computers

2. Minicomputers

3. Mainframe computers

4. Super computers.

Micro computers

A micro computer is a small computer with a micro processor as its central processing unit

. Micro computers became popular in the 1970s and 80s with the advent of increasingly powerful microprocessors.

Application

Home -families use micro computers for education.

Medical uses- the first micro computer was build specially for storing medical records.

Micro computers

Key features

1. Smaller than mini computers

2. High speed computer but less than mini

Disadvantages:-

3. Experts are required to operate.

4. Limited hardware devices are connected

Mini computers

A mini computer is a class of smaller computers that evolved in the mid -1960s . They use of transistors and core memory technologies, minimal instruction set and less expensive such as teletype modal 33 ASR

Mini computers

Key features

1. Higher processing speed

2. Smaller size

3. Cheaper

Disadvantage

4. Cannot connect all hardware.

5. Cannot execute all languages.