CLASSIFICATION OF COMPUTERS BY TYPES - JS1 NOTE

 

CLASSIFICATION OF COMPUTER SYSTEM ACCORDING TO TYPES

Classification Of Computers By Types

Objective:

i. Classify computers according to types

Introduction

Types of computers by types are:

(i)   Analog Computer

(ii) Digital computer

(iii) Hybrid computer

(i)   Analog Computer: This computer uses continuous physical phenomena such as electrical, mechanical or hydraulic quantities to solve problems. Examples are thermometer, speedometer, old radios, analog wrist watch, Cathode Ray Tube (CRT), Video Cassette recorder (VCR) e.t.c

(ii)   Digital computer: This computer performs calculations and logical operations with quantities represented as digits, usually in the binary system (0’s and 1’s). Examples are: PC (personal computer), calculators, digital clock, digital cameras e.t.c

(iii)   Hybrid computer: This is a computer that is capable of inputting and outputting in both analog and digital, i.e They exhibit features of analog and digital computers. Hybrid computers can resolve more complicated problems.  E.g petrol pump, weather system computation, automatic gas pump station.

      Characterictics of Analog Computers

1. They measure physical quantities

2. The value represented change continuously

  Characterictics of Digital Computers

1. They perform calculation in digital/discrete form

2. They translate numeric values into machine readable

Characterictics of Hybrid Computers

1. They use both analog and digital techniques

2. They convert values into binary value i.e 0 or 1

                          Class Activities

1. List the classification of computers by types

2. Differentiate between analog and digital computers