Exercise: Digital Electronics

Questions for: Digital Electronics

Assuming accumulator contain A 64 and the carry is set (1). What will register A and (CY) contain after SBI 0B7H?
A:
12 H, 0
B:
12 H, 1
C:
DDH, 0
D:
DDH, 1
Answer: D
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In an op-amp a virtual ground is a ground for
A:
voltage only
B:
current only
C:
both voltage and current
D:
neither voltage nor current
Answer: A
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ALU processes
A:
decimal numbers
B:
binary numbers
C:
hexadecimal numbers
D:
all of the above
Answer: B
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Which of the following is a self-complementing code?
A:
8421 code
B:
Excess 3 codes
C:
Pure binary code
D:
Gray code
Answer: D
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Among the logic families, the family which can be used at very high frequency greater than 100 MHz in a 4 bit synchronous counter is
A:
TTL
B:
CMOS
C:
ECL
D:
TTLLS
Answer: C
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