Logic circuits

What is the main use of a Karnaugh map?

  1. AMeasuring circuit delay
  2. BDesigning analog filters
  3. CSimplifying logic expressions
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Answer: C. Simplifying logic expressions

A Karnaugh map arranges a truth table so that adjacent cells differ in only one input bit. Grouping adjacent cells containing 1 lets you simplify logic expressions visually. It is convenient for simplification by hand with up to about four input variables.

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  1. Which correctly describes the setup time of a flip-flop?
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  5. What is the state called when a flip-flop receiving an asynchronous signal violates setup or hold time and its output is temporarily neither 0 nor 1?