题目内容
Take XOR as an example, the basic operations of XOR ( Exclusive-OR ) gate are described below with the aid of its truth table .
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A logic gate is an elementary building block of a digital circuit. Using combinations of logic gates, complex operations can be performed.
A NOR gate can have two or more inputs. The dot 'o' on the output means 'not' showing that it is a Not OR gate. The output of a NOR gate is true when none of its inputs are true.
The Flip-flop is the basic storage element in sequential logic ( in contrast to combinational logic ) .
The truth table shown summarizes the operations of the positive edge-triggered D flip-flop. On the rising edge of the clock signal, if the block is enabled, the output Q is the same as the input D.
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