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Transcript

Computer

“The computer was born to solve problems that did not exist before.”

Introduction

A computer is an electronic device that receives input, stores or processes the input as per user instructions and provides output in desired format.

A computer is an electronic device that receives input, stores or processes the input as per user instructions and provides output in desired format.

Computer input is called data and the output obtained after processing it, based on user’s instructions is called information. Raw facts and figures which can be processed using arithmetic and logical operations to obtain information are called data.

Characteristics of a Computer

1. Speed 6. Communications2. Spontaneous 7. Diligence3. Storage 4. No Feelings5. Consistency

Computer

“A computer once beat me at chess, but it was no match for me at kick boxing.”

Generations of Computers

Advantage of Computer

• Easy processing of complex tasks. • It saves time by quick manipulation of data as compared to when done manually. • The errors in data processing are minimized when a computer is used. • It has helped in making communication easier by using internet. • It stores, retrieves, and processes a large amount of data. • It helps in multitasking of various jobs.

  1. First Generation Computers (1942 - 1955)
  2. Second Generation Computers (1955 - 1964)
  3. Third Generation Computers (1964 - 1975)
  4. Fourth Generation Computers (1975 onwards)
  5. Fifth Generation Computers (In process)

Computer

“I do not fear computers. I fear lack of them.”

Disadvantage of Computer

• Un-Employment • Cyber-crime • Computer can perform only what is it programmed to do. • Computer need well defined instructions to perform any operation

Application of Computer

Booting

Cold Booting − When the system is started by switching on the power supply it is called cold booting. The next step in cold booting is loading of BIOS. Warm Booting − When the system is already running and needs to be restarted or rebooted, it is called warm booting. Warm booting is faster than cold booting because BIOS is not reloaded.

  1. Education
  2. Entertainment
  3. Science
  4. Publishing
  5. Agriculture
  6. Government
  7. Home