Digital Computer High speed programmable ,electronic device

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Presentation transcript:

Digital Computer High speed programmable ,electronic device Recognize data by counting discrete signals representing either high(1) or low(0) voltage state of electricity. Accurate Output is continuous but obtain when computation is completed. Real time example: Digital watch

Micro Computer(Personal Computer) Consists of microprocessors, microchips and storage devices. Suitable for personal usage. Common PC suppliers are HP, DELL, HCL, Compaq etc.

Mini Computer Small general purpose computer More memory and processing capabilities than micro computers. Used as servers in the network environment Common mini computers are PDP-II, PDP-45. Mini Computer System

Mainframe Computer Several computer terminals (keyboard, monitor etc.) are plugged into a single mainframe. Fast processing Large storage Occupy lot of space and require air conditioning Non portable computer Skilled staff is required to operate. Common mainframe series are Superry, DEC, ICL, PDP 370 etc.

Mainframe Computer

Super Computer Most powerful and most expensive. Fast. Can perform millions of processes in a second. Ideal for handling large and highly complex problems that require large processing such as weather forecasting, remote sensing, image processing etc. Large memory. PARAM is India's first super computer.

Super Computer

Laptop and Hand Held Computer Very small in size and light in weight. Portable

Some other digital computers Tablet PC Smart Phone