MCS - 51 Architecture - MCQs with answers

MCS - 51 Architecture - MCQs with answers

1. Which operations are performed by the bit manipulating instructions of boolean processor?

a. Complement bit
b. Set bit
c. Clear bit
d. All of the above

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2. Which data memory control and handle the operation of several peripherals by assigning them in the category of special function registers?

a. Internal on-chip RAM
b. External off-chip RAM
c. Both a & b
d. None of the above

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3. Why is the speed accessibility of external data memory slower than internal on-chip RAM?

a. Due to multiplexing of lower order byte of address-data bus
b. Due to multiplexing of higher order byte of address-data bus
c. Due to demultiplexing of lower order byte of address-data bus
d. Due to demultiplexing of higher order byte of address-data bus

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