Exercise: Microprocessors

Questions for: Microprocessors

The 8085 instruction LDA FFA is an example of
A:
Direct addressing
B:
Register addressing
C:
Immediate addressing
D:
Register indirect addressing
Answer: A
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The programming language in which Excel records the macro code is
A:
basic
B:
visual basic
C:
video basic
D:
basic 2
Answer: B
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Intel 2004 is a
A:
ROM
B:
Volatile RAM
C:
NV RAM
D:
None of the above
Answer: C
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The instruction LDA 20 in 8085 means
A:
contents of memory location 20 are fetched into the accumulator
B:
the value 20 is fetched into accumulator
C:
either (a) or (b)
D:
neither (a) nor (b)
Answer: A
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Assertion (A): 1C 74181 is an ALU in TTL 7400 series.

Reason (R): 1C 74181 can accept two 4 bit words and can perform any one of possible 16 arithmetic or logic operations.

A:
Both A and R are correct and R is correct explanation of A
B:
Both A and R are correct but R is not correct explanation of A
C:
A is correct R is wrong
D:
A is wrong R is correct
Answer: B
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