281. How many and what one the machine cycles needed for execution of MOV A,M?
A. 1, Fetch
B. 2, Fetch and Memory read
C. 2,Fetch and Memory write
D. 2, Fetch and Bus idle

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282. How many and what are the machine cycles needed for execution of MOV D,C?
A. 1, Fetch
B. 2, Fetch and Memory read
C. 2, Memory Read and Memory write
D. 2, Fetch 4 Bus idle

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283. How many and what are the machine cycles needed for execution of PUSH B?
A. 2,Fetch and Memory write
B. 3, Fetch and 2 Memory write
C. 3, Fetch, Memory write and read
D. 3, Fetch and 2 Memory read

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284. 8085 microprocessor is a
A. zero address microprocessor
B. one address microprocessor
C. two address microprossor
D. none of these

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285. SHIFT LEFT instruction causes all bits shifted one position to the left with rightmost bit set to zero. The effect is to
A. multiply by 2
B. divide by 2
C. SET the most significant bit
D. none of these

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286. The selection of a microprocessor for an application is done keeping in mind
A. speed compatibility of microprocessor with peripherals
B. the time critical behaviour of the application
C. the size of program required to implement certain functions
D. all of above

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287. The following signal is used when a microprocessor wants to address the memory
A. lo/
B. Status signals
C.ALE
D. HOLD and HLDA

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