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Microprocessor

Microprocessor
Total numbers of output pins in 8085 microprocessor are

 13
 27
 40
 30

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Microprocessor
The length of bus cycle in 8086/8088 is four clock cycles, T1, T2, T3, T4 and an indeterminate number of wait state clock cycles denoted by Tw. The wait states are always inserted between

 T4 & T1
 T1 & T2
 T3 & T4
 T2 & T3

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Microprocessor
The content of the A15-A8 (higher order address lines) while executing “IN 8-bit port address” instruction are

 all bits set (i.e. FFH)
 all bits reset (i.e. 00H)
 irrelevant
 same as the content of A7-A0

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Microprocessor
For a memory with a 16-bit address space, the addressability is

8 bits
2^16 bits
Cannot be determined
16 bits

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Microprocessor
While STC instruction executes,

 no flags will be affected.
 all flags will be affected.
 only carry and zero flags will be affected.
 only carry flag will be affected.

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Microprocessor
An I/O processor controls the flow of information between

Two I/O devices
Cache and main memory
Main memory and I/O devices
Cache memory and I/O devices

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MORE MCQ ON Microprocessor

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