Microprocessor
In 8085 microprocessor based system maximum possible number of input/output devices can be connected using I/O mapped I/O technique is

 512
 256
 65536
 64

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Microprocessor
When .9432 E – 4 is subtracted from .5452 E – 3 in normalized floating point mode

None of the numbers is changed
.9432 E – 4 is changed to .09432 E – 3 and .5452 E – 3 is not changed
Both Ihe numbers are changed and their exponents are, made equal to -5
.5452 E – 3 is changed to 5.452 E – 4 but .9432 E – 4 is not changed

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Microprocessor
PUSH B instruction in 8085 microprocessor causes

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