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Microprocessor

Microprocessor
How many T-states are required for execution of OUT 80H instruction?

 16
 7
 13
 10

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Microprocessor
The address bus width of a microprocessor which is capable of addressing 64 Kbytes of the memory is

 20
 12
 16
 8

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Microprocessor
Identify the communication interfacing device from the following

 8255
 8257
 8155
 8251

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

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

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Microprocessor
Output of the assembler in machine codes is referred to as

 Source program
 Macroinstruction
 Symbolic addressing
 Object program

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Microprocessor
Which general register or general register pair is incremented/decremented by 2 during PUSH and POP instructions?

 Program Counter.
 H-L.
 Stack Pointer.
 D-E.

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