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Electronics Engineering Objective Questions { Digital Circuit and Microprocessor }



295. Intel 8080A and Motorola 6800 microprocessors differ in
A. number of address lines
B. number of data lines
C. instruction set
D. instruction set and operating frequency
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296. As compared to 16-bit microprocessors, 8 bit microprocessors are limited in
A. speed
B. directly addressable memory
C. data handling capability
D. all the above
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297. WAIT states are used
A. to give slow devices additional time to put out valid data
B. to insert a deliberate delay
C. during I/0 operation
D. none of these
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298. Intel 8085A and 8086A differ in
A. number of address lines
B. number of data lines
C. operating frequency
D. all the above
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299. The advantage of using segment registers in 8086 and above microprocessors are that they
A. allow the memory capacity to be 1 megabyte even though the addresses associated with the individual instructions are only 16 bits wide
B. allow the instruction, data or stack portion of a program to be more than 64K bytes long by using more than one code, data or stack segment
C. facilitate the use of separate memory areas for a program, its data and the stack
D. all of above
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300. The set of commands which give directions to the assembler during the assembly process but are not translated into machine instructions are called
A. mnemonics
B. directives
C. identifiers
D. operands
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301. Intel 80286 microprocessor was designed to serve as the CPU in a multitasking operating systems as it has
A. 8MHz operating frequency real address mode to support lower microprocessors of the same family
B. (e) protection and virtual memory capability
C. (f) signals to interface with co-processor
D. none of these
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