Application of ICT 2ndLec classification of computers.pptx
- 1. Application of Information & Communication Technologies 2. Classification of Computer
- 2. Classification of Computers • Computer are classified on the bases of size, speed, processing power and price • Computer can be classified into the following categories 1. Personal Computer 2. Mobile Devices 3. Minicomputer 4. Mainframe Computer 5. Supercomputer 6. Embedded Computer
- 3. 1. Personal Computers/Microcomputers • Persona computer is designed to be used by one persona at a time • It consists of a processor, memory and one or more input, output and storage devices • Personal computers are available in different sizes and shapes • Personal computer is commonly used in business, at home and other fields of life
- 4. 1.1 Desktop Computer • Desktop computers are the most common type of personal computer • It is designed in a way that all of its components fit on a desk or table • In one model, the system unit is placed horizontally on the desktop or table and monitor is placed on the system unit • In another model called tower model, both monitor and system unit are placed on the table
- 5. 1.2 Portable Computer • Portable computer is a mobile personal computer that can be carried from one place to another • It has input, output , storage and processing components integrated into a single unit • It can receive power from battery • Different types of portable computers include I. Laptop II. Tablet
- 6. 2. Mobile Devices • A mobile device is a computing device designed to hold in the hand • Mobile devices typically have small screens and some of them have keyboards • Mobile devices can be connected to a large network to exchange data • Popular types of mobile devices are smart phones
- 7. 3. Minicomputers • Minicomputer is typically larger, more powerful and more expensive than personal computer • Minicomputer can serve up to several hundreds connected users at the same time • It can be used in networked environment as server computer • It is normally access by users through a personal compute • Some examples of mini computers are Prime 9955, HP 3000 etc
- 8. 4. Mainframe Computers • Mainframe computer is a large computer designed to serve several thousands connected users at the same time • It is more powerful and expensive as compared to minicomputer • These computers can store large amount of data, information and programs • The user access a mainframe computer through personal computer
- 9. 5. Supercomputers • Supercomputer is the fastest and the most powerful computer • It is biggest in size and more expensive than any other computer • It is used to perform complex tasks • The modern supercomputer consists of thousands of microprocessors • It can process trillions of instructions in one second • Supercomputer is mostly used for weather forecasting, weapon design and atomic research etc
- 10. 6. Embedded Computers • An embedded computer is designed for special purposes • It works as a component in a larger product • These computers are very small and have limited hardware • They perform various functions according to the requirement of the product in which they are embedded • Embedded computers are used in automobiles, robotics and home devices such as security monitoring system