Exercise: Digital Electronics

Questions for: Digital Electronics

In 8085 microprocessor, which of the following interrupts has the highest priority?
A:
RST 5.5
B:
RST 7.5
C:
TRAP
D:
INTR
Answer: C
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Schottky clamping is resorted to in TTL gates
A:
to reduce propagation delay
B:
to increase noise margin
C:
to increase packing density
D:
to increase fan out
Answer: A
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The range of signed decimal number that can be represented by 6 bit in complement number is
A:
-31 to +31
B:
-63 to +64
C:
-64 to +63
D:
-32 to +31
Answer: A
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The complement of Boolean expression AB (B C + AC) is
A:
(A + B) + (B + C) + (A + C)
B:
A B + (B + C)(A + C)
C:
(A + B) + (B + C) (A + C)
D:
none of the above
Answer: C
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An 8-bit microprocessor has 16 bit address bus A0 - A15. The processor addresses a 1-K byte memory chip as shown. The address range for the chip is
A:
(F00F)H TO (F40E)H
B:
(F000)H TO (F3FF)H
C:
(F100)H TO (F4FF)H
D:
(F700)H TO (FAFF)H
Answer: B
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