Lesson 6 computer hardware systems

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Lesson 6 computer hardware systems

  1. 1. Computer Systems Hardware<br />Lesson 6<br />
  2. 2. The Computer<br />An electronic system designed to manipulate data . <br />They are machines for storing , moving, adding, and subtracting, and evaluating data.<br />
  3. 3. Four Basic Functions of Computer<br />Input<br />Processing<br />Storage<br />Output<br />
  4. 4. Program<br />Sequences of instructions<br />These instructions control the manner in which the computer carries out its operational functions.<br />A computer will perform only what it is <br />
  5. 5. Classification of Computers by Purpose<br />General-Purpose Computer<br />These machines have the capability of dealing with a variety of different problems , and are able to act in response to progress created to meet different needs.<br />It has the ability to store different programs of instruction and thus to perform a variety of operations.<br />
  6. 6. Classification of Computers by Purpose<br />Special – Purpose Computer<br />It is designed to perform one specific task.<br />They are referred to as dedicated.<br />
  7. 7. Classification of Computers by type of data handled<br />Analog Computers <br />are used for scientific , engineering and process-control purposes.<br />It provides an analog or simulation of the object or system it represents.<br />Digital Computers<br />It is a machine that specializes in counting.<br />
  8. 8. Classification of Computers by type of data handled<br />Hybrid Computers<br />Combines the measuring capabilities of the analog computer and the logical and control capabilities of the digital computer.<br />It offers an efficient and economical method of working out special types of problems in science and various areas of engineering.<br />

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