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Computer Overview

Computer Overview. Computer. The word "computer" comes from the word "compute" which means "to calculate". Computer is a electronic device which can perform many operations at an enormous speed. It is a device which performs on data.

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Computer Overview

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  1. Computer Overview

  2. Computer • The word "computer" comes from the word "compute" which means "to calculate". • Computer is a electronic device which can perform many operations at an enormous speed. It is a device which performs on data. • Computer is also refer to electronic data processing machine.

  3. CHARACTERSTICS OF COMPUTER • SPEED: ABILITY TO PERFORM CALCULATION AT AN ENORMOUS SPEED AND TO STORE THAT DATA FOR FUTURE USAGE. • ACCURACY:PROVIDE RESULTS ACCURALY. • STORAGE: Computer can store mass storage of data with appropriate format. • DILIGENCE: Computer can work for hours without any break and creating error. • VERSSATILITY: computer CAN perform completely different type of work at the same time.

  4. Types of computer • There are two types of computer: • Analog: The analog computer handles or processes information which is of physical nature. for example: Temperature, Pressure, etc. • Digital: The digital computer processes information which is essentially in binary or two state form namely, zero & one.

  5. CLASSIFICATIONS OF DIGITAL COMPUTERS • HOME COMPUTERS: a HOME COMPUTER IS USED PRIMARILY FOR EDUCATION AND GAMES. A VERY EXPENSIVE PERSONAL COMPUTER, MIGHT ACTUALLY BE CLASSIFIED AS HOME COMPUTER. • PERSONAL COMPUTERS: a PERSONAL COMPUTER IS A COMPUTER THAT IS DESIGNED FOR AN INDIVIDUAL USER. THE PERSONAL COMPUTER IS FUNCTIONALLY IDENTICAL TO LARGE COMPUTERS THAT SERVE MULTIPLE USER AND HAVE GREAT STORAGE CAPACITY. • MINICOMPUTERS: a MINICOMPUTER IS A SMALL TO MEDIUM-SCALE COMPUTER THAT IS THE MIDRANGE BETWEEN A MICROCOMPUTER AND A MAINFRAME. IT CAN SUPPORT FROM A SEVERAL HUNDRED USER TERMINALS. • WORKSTATIONS:THE WORKSTATION IS A POWERFUL STAND-ALONE COMPUTER OF THE SHORT USED IN THE COMPUTER-AIDED DESIGN(cad) AND OTHER APLLICATION REQUIRING A HIGH END, USUALLY EXPENSIVE, MACHINE WITH CALCULATING OR GRAPHICS CAPABLITY. • MAINFRAME COMPUTERS: mAINFRAME COMPUTERS ARE VERY POWERFUL, LARGESCALE GENERAL PURPOSE COMPUTERS.

  6. APPLICATIONS OF COMPUTERS • OFIICES • BOOK PUBLICATION • DATA ANALYSIS • GRAPHICS • COMPUTER AIDED MANUFACTURE(CAM) • DATABASE MANAGEMENT • PROJECT MANAGEMENT • COMUNICATION • MEDICAL FIELD • MILITARY • BANK

  7. HARDWARE & SOFTWARE • HARDWARE: • THE PYSICAL COMPONENTS OF COMPUTER ARE CALLED HARWARE. • A PHYSICAL COMPONENT MAY BE ELECTRONIC, MAGNETIC, MECHANINCAL OR OPTICAL. • EXAMPLES: HARD DISK, CD, CRT, FLOPPY, ETC. • SOFTWARE: • the SET OF COMPUTER PROGRAMS, PROCEDURES AND ASSOCIATED DOCUMENTATION RELATED TO THE EFFECTIVE OPERATION OF A COMPUTER SYSTEM ARE CALLED SOFTWARE. • System software is SOFTWARE designed to provide a platform for other software.  • APPLICATION SOFTWARE IS SOFTWARE THAT USES THE COMPUTER SYSTEM TO PERFORM SPECIAL PROGRAMS.

  8. proccesSing • Input: the process of entering data and instructions into the computer system is known as inputting. • Process: Performing arithemetical and logical operations on data in order to convert them into useful information is called processing. • Arithmetic control unit(Alu) • Control unit(cu) • Output: after processing showing of result is outputting.

  9. input Devices • Input devices: • Mouse • Keyboard • Scanner • Joystick • Touch screen • Track ball • Light pen • Graphic tablet

  10. Output devices • Output devices: • Monitor • Printer • Fax • Microphone • Headphone • Speaker • projector

  11. Made bydivyanshu singh

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