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#
Authors:
Linda Null ,julia Lobur
Chapter:
Boolean Algebra And Digital Logic
Exercise:
Review Of Essential Terms And Concepts
Question:20 | ISBN:9780763704445 | Edition: 3

Question

20. Which flip-flop gives a true representation of computer memory?

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Answer

A Data flip-flip (D flip-flop) is a true representation of computer memory, because the output of D flip-flop is same as the input whenever the clock signal is high.

 

Characteristic table of a D flip-flop:

 

Input D

Output Q

0

0

1

1

 

  • If the input 0 is applied at the input with the pulsed clock, then the output is 0.
  • If the input 1 is applied at the input with the pulsed clock, then the output is 1.

 

The output Q represents the present state of the input of the circuit. The D flip-flop stores current value of the input therefore, it represents the physical computer memory.

 

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