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What type of control pins are needed in a microprocessor to regulate traffic on the bus, in order to prevent two devices from trying to use it at the same time?

  • A.Bus control
  • B.Interrupts
  • C.Bus arbitration
  • D.Status

Answer: C

Correct answer: Bus arbitration

Bus arbitration pins decide which device may drive the bus at any moment, so that two masters never attempt to use it at once. Without arbitration, simultaneous drivers would corrupt the data and could damage the drivers themselves.

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