Microprocessor
PUSH B instruction in 8085 microprocessor causes

 registers B & C to be cleared
 the contents of register B & C to be copied in the stack
 the contents of register B only to be copied in the stack
 the contents of registers B & C to be transferred in the stack and and the registers get cleared

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Microprocessor
How can we make any bit of a register “1”?

 AND that bit with “1” and remaining bits with “0”.
 AND that bit with “0” and remaining bits with “1”.
 OR that bit with “0” and remaining bits with “1”.
 OR that bit with “1” and remaining bits with “0”.

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Microprocessor
A microprocessor is ALU

 register unit and I/O device on a single chip.
 register unit and control unit on a single chip.
 and control unit on a single chip.
 and memory on a single chip.

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