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Microprocessor

Microprocessor
CALL instruction is a ______ instruction.

 3 bytes
 4 bytes
 2 bytes
 1 bytes

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

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

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Microprocessor
While using a frequency counter for measuring frequency, two modes of measurement are possible: Period time Frequency mode There is a ‘cross-over frequency’ below which the period mode is preferred. Assuming the crystal oscillator frequency to be 4MHz, the crossover frequency is given by

 2 Mhz.
 8 Mhz.
 1Khz.
 2 Khz.

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Microprocessor
An e-mail message can be sent to many recipients.

True
False

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Microprocessor
In 8086, _______ uses a mechanism known as an instruction stream queue to implement a pipeline architecture.

 Execution Unit (EU)
 Both ‘b’ and ‘c’
 Bus Interface Unit (BIU)
 None of these

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Microprocessor
How many machine cycles are required for execution of IN 30H instruction

 6
 5
 3
 4

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