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Microprocessor

Microprocessor
Register pair used to indicate memory

 D and E
 W and Z
 B and C
 H and L

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

 3
 6
 4
 5

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Microprocessor
In 8085 which addressing mode is also called inherent addressing?

Immediate
Register
Direct
Implicit

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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

 1Khz.
 2 Khz.
 8 Mhz.
 2 Mhz.

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Microprocessor
A microcomputer consists of

 memory
 I/O device
All of these
 a microprocessor

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Microprocessor
The stack is nothing but a set of

 reserved ROM address space
 reserved I/O address space
 reserved RAM address space
None of these

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