
82 ◾ Computational Thinking for the Modern Problem Solver
does not need to travel through as many gates. Since digital circuits are
expressions of Boolean propositions, it is natural to use Boolean algebra to
design and analyze complex digital circuitry.
One nal example of a basic digital circuit is a circuit that performs an
equivalency check on two inputs. Figure3.15 has an output of True when-
ever P = Q, otherwise the output is False. is circuit encodes the concept
that P is only equal to Q whenever (a) both P and Q are True or whenever
(b) both P and Q are False.
3.3.3 Image Compositing
A graphic designer is a professional who wo ...