Electronics Engineering Objective Questions { Digital Circuit and Microprocessor }

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330. A computer system has a 4K word cache organised in blocked associative manner with 4 blocks per set, 64 words per block. The number of bits in the SET and WORD fields of the main memory address formula is

A. 15, 4

331. In a 8085 microprocessor system with memory mapped I/0

A. I/O devices have 8-bit a addresses

B. I/O devices are accessed using IN and OUT instructions

C. there can be a maximum of 256 input devices and 256 output devices

D. arithmetic and logic operations can be directly performed with the I/O data

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332. Choose the correct statement(s) from the following :

A. PROM contains a programmable AND array and a fixed OR array

B. PLA contains a fixed AND array and a programmable OR array

C. PROM contains a fixed AND array and programmable OR array

D. None of the above

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333. Choose the correct statement(s) from the following :

A. PROM contains a programmable AND array and a fixed OR array

B. PLA contains a fixed AND array and a programmable OR array

C. PROM contains a fixed AND array and a programmable OR array

D. PLA contains a programmable AND array and a programmable OR array.

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334. 2's complement representationof a 16-bit number (one sign bit and 15 magnitude bits) is FFFI. Its magnitude in decimal representation is

335. In a microprocessor, the resister which holds the address of the next instruction to be fetched is

A. Accumulator

B. Program Counter

C. Stack Pointer

D. Instructor Register

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336. In a microcomputer, WAIT states are used to

A. make the processor wait during a DMA operation

B. make the processor wait during a power interrupt processing

C. make the processor wait during a power shutdown

D. interface slow peripherals to the processor

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