Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Computer Science Posted 13 Sep 2017 My Price 5.00

two-input multiplexers

9-29.*The circuit in Figure 9-75 uses three two-input multiplexers (Figure 9-19).

Determine the function performed by this circuit.

FIGURE 9-75 Problem

9-29.

I 3 I 2

Z

I 1 I 0

S 1 S 0

Q21

9-30. Use the idea from Problem 9-29 to arrange several 74151 1-of-8 multi- plexers to form a 1-of-64 multiplexer.

9-31.*Show how two 74157s and a 74151 can be arranged to form a 1-of-16 multiplexer with no other required logic. Label the inputs I 0 to I 15 to show how they correspond to the select code.

Q22

9-32. (a) Expand the circuit of Figure 9-24 to display the contents of two three-stage BCD counters.

(b)*Count the number of connections in this circuit, and compare it with the number required if a separate decoder/driver and dis- play were used for each stage of each counter.

Answers

Maurice Tutor
(5)
Status NEW Posted 13 Sep 2017 07:09 PM My Price 5.00

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