Introduction to computer_and_its_structure

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Introduction to computer_and_its_structure

  1. 1. INTRODUCTION TOCOMPUTER ANDITS STRUCTUREwww.eshikshak.co.in
  2. 2. Computer● A computer is an electronic device, operating under the control of instructions (software) stored in its own memory unit, that can accept data (input), manipulate data (process), and produce information (output) from the processing.● Computers can perform four general operations, which comprise the information processing cycle. ○ Input ○ Process ○ Output www.eshikshak.co.in
  3. 3. Types of Computer● Mainframe Computers● Mini Computers● Workstations● PC www.eshikshak.co.in
  4. 4. Mainframe computers● They are very large powerful computer systems that are usually at the heart of a business.● It has a very powerful processor, large amounts of main memory and a huge backing storage capacity.● They are accessed through one or more terminals. Terminals consist of a screen, keyboard, mouse but www.eshikshak.co.in no processor as all the
  5. 5. Mini Computer● A computer of a size intermediate between a microcomputer and a mainframe.● Minicomputers have been stand- alone computers (computer systems with attached terminals and other devices) sold to small and mid-size businesses for general business applications and to large enterprises for department-level operations.● In recent years, the minicomputer has evolved into the "mid-range server" and is part of a network. www.eshikshak.co.in
  6. 6. Workstations● A workstation is a computer intended for individual use that is faster and more capable than a personal computer.● Its intended for business or professional use (rather than home or recreational use).● Workstations and applications designed for them are used by small engineering companies, architects, graphic designers, and any organization, department, or individual● It requires a faster microprocessor, a large amount of random access memory (RAM), and special features such as high-speed graphics adapters. www.eshikshak.co.in
  7. 7. Primary Components ofComputer● Input devices● CPU [CU + ALU]● Memory● Output devices● Storage devices www.eshikshak.co.in
  8. 8. Software Components ● A collection of programs used to operate computers and related devices Software Application System Software Software CustomizeOperating Language System Package d System Processor Utilities Software Software www.eshikshak.co.in

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