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Microprocessor

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

True
False

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

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

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Microprocessor
In microprocessor based system DMA refers to

 direct memory access for the user
None of these
 direct memory access for the I/O device
 direct memory access for microprocessor

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Microprocessor
The address bus of any microprocessor is always

 Either unidirectional or bi-directional
 Unidirectional
 None
 Bi-directional

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Microprocessor
Identify the programmable interval timer from the following

 8252
 8253
 8275
 8279

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

 5
 6
 3
 4

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