Exercise: Digital Electronics

Questions for: Digital Electronics

Gray code is used in devices which convert analog quantities to digital signal because it is
A:
more error free
B:
much simpler than binary code
C:
superior to Excess-3 code
D:
absolutely error free
Answer: A
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In 8085 microprocessor, what is the memory word addressing capability?
A:
32 K
B:
64 K
C:
256 K
D:
512 K
Answer: B
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The power dissipated per gate
A:
is constant at all frequencies
B:
increases with frequency
C:
decreases with frequency
D:
may increase or decrease with frequency
Answer: B
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In ASCII, letter B is coded as
A:
1000001
B:
1000010
C:
100100
D:
1001000
Answer: B
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Among the digital IC families - ECL, TTL, and CMOS
A:
ECL has the least propagation delay
B:
TTL has largest fan out
C:
CMOS has the lowest noise margin
D:
TTL has the lowest power consumption
Answer: A
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