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Microprocessor

Microprocessor
RST 3 instruction will cause the processor to branch to the location

 0024H
 0000H
 0028H
 0018H

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Microprocessor
Pick up the programmable interrupt controller from the following

 8279
 8275
 8259
 8257

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Microprocessor
If the number of address bits in a memory is reduced by 2 and the addressability is doubled, the size of the memory (i.e., the number of bits stored in the memory)

Remains unchanged
Doubles
Increases by 2^(address bits)/addressability
Halves

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Microprocessor
A microprocessor differentiates between op code, data/address at any time by

 the program counter
 its internal registers
 the sequence in which memory contents are fetched by it
 the stack pointer

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Microprocessor
The reason for the presence of ALE pin in 8085, but not in 6800 is that

 8085 uses I/O mapped I/O, whereas 6800 uses memory mapped I/O
 8085 has multiplexed bus, whereas 6800 does not have
 None
 8085 has 5 interrupts lines, whereas 6800 has only two

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Microprocessor
HLT opcode means

  end of program.
  load data to accumulator.
  load accumulator with contents of register.
  store result in memory.

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MORE MCQ ON Microprocessor

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