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Microprocessor

Microprocessor
Register pair used to indicate memory

 D and E
 H and L
 B and C
 W and Z

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Microprocessor
The minimum number of transistors required to implement a two input AND gate is

4
6
8
2

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Microprocessor
The program counter in a 8085 micro-processor is a 16-bit register, because

 It counts 16-bits at a time
 There are 16 address lines
 It facilitates the user storing 16-bit data temporarily
 It has to fetch two 8-bit data at a time

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

 PUSH PSW
 POP PSW
 PUSH A
 PUSH SP

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Microprocessor
When any data transfer instruction, to transfer the data from memory to microprocessor, is executed the condition flags are

 affected indicating specific conditions
 always set
 always reset
 not affected

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

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

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