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A one-to-four line demultiplexer is to be implemented using a memory. How many bits must each word have ?

  • A.1 bit
  • B.2 bits
  • C.4 bits
  • D.8 bits

Answer: A

Correct answer: 1 bit

A one-to-four demultiplexer sends a single data bit to one of four outputs, so the memory needs four locations - addressed by the two select lines - each holding just the one data bit.

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