Types of computer

There are three types of Computers namely:

Digital computer

Analogue Computer

Hybrid computer

Digital Computer

Digital computer system is a system or device using discrete signals or values to represent data numerically. They are computers that are used for counting and to work on numbers.

It works on data of non-continuous or discontinuous nature. Most digital representation in computing is based on the binary system. For example, the channel select on the television set is a digital device because it restricts you to a discrete set of channels. Another example is the digital wrist watch which shows you the exact time in digits and digital computers, calculator, microcomputer, digital ammeter.

Analogue Computer

These are computers that work on non-discrete or continuous data. In contrast to digital computers, they have continuous value. They are used to measure values that changes from time to time. Examples of such measurements are temperature, speed, weight etc.  . They measure physical quantities and convert them to numbers.  Examples of  analogue devices are thermometer, speedometer, fuel gauge, electric meters ,petrol dispenser at petrol station and analogue ammeter.

They are mostly used in industrial operations.

Hybrid Computers

The high speed of analogue machine is combined with the flexibility of a digital machine. A hybrid computer is made up of digital and an analogue connect together in a system.

Hybrid computers are mostly used in scientific  research and technical application because they count and measure. They have both ability to handle discrete and non-discrete data since the properties of analogue and digital are combined in hybrid computers.

EVALUATION

1. Mention the three types of Computers.
2. Write short notes on the three types of Computers.

READING ASSIGNMENT

Modern computer studies by Victoria Dinehin pg 84-85

WEEKEND ASSIGNMENT

1. How many types of computer do we have? (a) 1   (b) 2    (c) 3     (d) 4
2. Analogue computers work on ____ (a) non-discrete data (b) discrete data (c) data (d) digital
3. ____ computer measures physical quantities. (a) Digital (b) Hybrid (c) Analogue (d) none
4. ____ computer is used for counting? (a) Digital (b) Hybrid (c) Analogue

(d) continous

• Which of these computers has the ability to handle discrete and non discrete?

(a) Digital (b) Hybrid (c ) Analogue (d) continuous

THEORY

1. List the three types of computers.
2. Write short notes on the three types of computers.
3. List any two examples each of digital devices and analogue devices.