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Consumer Electronics by S. P. Bali

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WASHING MACHINE HARDWARE

A system is an assembly of components united by some form of regulated interaction to form an organised whole. We will examine a microcomputer system, using a washing machine control as an example. The input peripherals consist of (Fig. 51.4).

 

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Fig. 51.4 Washing machine—hardware

  1. temperature sensor which senses the washing water temperature. (The analog/digital converter changes the analog values to binary numbers).
  2. safety cut-out switch.
  3. keyboard for program selection.
  4. water level gauge.
  5. motor for washing drum.
  6. power switches for motor, heater, etc.
  7. heater for washing water.
  8. water inlet valve.
  9. water suction pump. ...

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