Instruction Set of 8051 Microprocessor - MCQs with answers

Instruction Set of 8051 Microprocessor - MCQs with answers


Q1 . Which instruction indicates the transfer of program sequence to the address specified by 16 bit value if Z flag =0 ?

a. CZ Address
b. CNZ Address
c. CPE Address
d. CPO Address

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ANSWER: b. CNZ Address



Q2. Which instruction is used to set the interrupt by maintaining the serial output bit in set mode of operation?

a. SIM
b. STC
c. SBI Data
d. SUI Data

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ANSWER: a. SIM



Q3. Which instruction set performs the dual operation of reading the status of interrupts as well as serial input data bit ?

a. RNZ
b. RZ
c. RPO
d. RIM

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ANSWER: d. RIM


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