Exercise: Microprocessors

Questions for: Microprocessors

The standard FORTRAN exponential form of decimal number - 0.000000023 is
A:
2.3 E - 8
B:
-2.3 E - 8
C:
2.3 E - 7
D:
-2.3 E - 7
Answer: B
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Which of the following characters is allowed in variable names in C?
A:
comma
B:
dot
C:
blank
D:
underscore
Answer: D
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The instruction MOV M, r in 8085
A:
causes content of register r to be moved to memory location whose address is in register H, L and uses register indirect addressing mode
B:
causes the content of memory location whose address is in register H, L to move to register r and uses register indirect addressing mode
C:
causes the content of register r to be moved to memory location whose address is in register H, L and uses immediate addressing mode
D:
causes the content of memory location whose address is in register H, L to move to register r and uses immediate addressing mode
Answer: A
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Which of the following is not a legal subscript?
A:
J + 2
B:
JA - 4
C:
-3
D:
3* IA - 2
Answer: C
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ALU 1C 74181 can accept two words each having
A:
2 bits
B:
4 bits
C:
8 bits
D:
16 bits
Answer: B
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