Introduction to Digital Systems – Exercise – 2

71. The rise-time of a pulse is normally measured between the ________.

(a) 0 and 100% level
(b) 10% and 90% level
(c) 30% and 70% level
(d) 50% level on the leading edge to the 50% level on the trailing edge

Answer
Answer : (b)
Explanation
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72. To determine which of two binary numbers is larger, you could use a(n) ________.

(a) register
(b) adder
(c) encoder
(d) magnitude comparator

Answer
Answer : (d)
Explanation
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73. Demultiplexing is a logic function that ________.

(a) determines which of several inputs is the greatest
(b) switches logic from one input to any of several output lines
(c) switches logic from several inputs onto one output line
(d) converts a code from one form to another

Answer
Answer : (b)
Explanation
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74. A binary number can be converted to be viewed on a 7-segment display by a(n) ________.

(a) decoder
(b) encoder
(c) multiplexer
(d) magnitude comparator

Answer
Answer : (a)
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75. A logic circuit that can store one bit of information is a ________.

(a) flip-flop
(b) counter
(c) gate
(d) code converter

Answer
Answer : (a)
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