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Microprocessor

Microprocessor
In order to save accumulator value on the stack, which of the following instruction may be used

 PUSH SP
 PUSH PSW
 PUSH A
 POP PSW

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Microprocessor
A microcomputer consists of

All of these
 I/O device
 memory
 a microprocessor

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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
 T2 & T3
 T1 & T2
 T3 & T4

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Microprocessor
A mask programmed ROM is

 programmed by the user
 erasable electrically
 erasable and programmable
 programmed at the time of fabrication

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Microprocessor
Which of the following is not a general purpose peripheral?

Programmable interrupt controller
Programmable CRT controller
Programmable interval timer
I/O port

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Microprocessor
Which one of the following circuits transmits two messages simultaneously in one direction

 Duplex
 Quadruplex
 Simplex
 Diplex

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