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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
The signals shown in Figure 4-76 are applied to the inputs of the circuit of Figure 4-32. Suppose that there is an internal open circuit at Z1-4.
(a) What will a logic probe indicate at Z1-4?
(b) What dc voltage reading would you expect at Z1-4? (Remember that the ICs are TTL.)
(c) Sketch what you think theÂ
and signals will look like.
(d) Instead of the open at Z1-4, suppose that pins 9 and 10 of Z2 are internally shorted. Sketch the probable signals at Z2-10, ![]()


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