Computer Fundamental, Types of Computer:

 Types of Computer:

Work:

1. Analog computer – Physical quantity, it handles the continuous data/signal. E.g. Speedometer, thermometer, weather forecasting, scientific calculation, pressure and ala etc.

2. Digital computer: 0, 1 (digital form), it is work on counting system. E.g. IBM 1401, HP, Acer, Dell, Samsung etc.

3. Hybrid Computer: Analog + digital (both counting and measure). E.g. Jet Plane, Control planet, Modem, Simulation, Petrol pump, ECG etc.

Size: 

1. Mainframe computer: Very large/ huge size of computer. Speed grather than 100 MHz

2. Super computer: Fastest and most powerful computer, 16-20 processor used, 64 bit word length, 1 TB RAM, storage minimum more than PB, capacity is more than 10 GHz

3. Minicomputer: Mid-range computer, smaller than mainframe, super and larger than microcomputer, support hundred user/network.

4. Microcomputer: Smallest computers than other, cheap computer. E.g. Desktop, laptop computer.

Purpose:

1. General purpose

2. Special purpose

Brand: 

1. IBM PC

2. IBM compatible

3. Apple/ Macintosh/Mac

Model: 

1. XT Computer (Extended Technology) , speed is 4.77 MHz, slow/cannot support advance software.(In 1983 developed by IBM)

2. AT computer (Advance Technology), faster than XT computer, run latest version software, speed is 100 MHz, made in 1985 GUI used windows.

3. PS/2 computer (Personal System), high storage capacity than AT.

Operating:

1. Client server

2. Peer to peer (p2p)

Application of computer:

The information may be presented to you in the form of text, images, video clips etc.

Application areas:

1. Education

2. Entertainment

3. Sports

4. Advertising

5. Medicine

6. Science and Engineering

7. Office

8. Home