Part E: Sequential Circuits (18 marks)
1. The waveform diagram below illustrates the output behaviour of five devices in response to inputs X, Y and the clock. Based on the output behaviour of A, B, C, D and E (marked in green), Indicateinthespacesprovidedthegateordevicecausedtheseoutputwaveforms. (10marks)
A: _____________ B: _____________ C: _____________ D: _____________ E: _____________
Clock Q0 Q1
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2. In the waveform diagram below, show what the waveform looks like for the signals in the flip-
flop circuit on the right. Assume that Q0
and Q1 each start with initial values of 0.
1 1TQ1 Clock
Student Number: __________________ 9
(continued)
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