Latch Interfacing with 8051 Microcontroller - MCQs with answers

Latch Interfacing with 8051 Microcontroller - MCQs with answers

1. What happens when the latch is kept open once after the execution of the latch operation by allowing input digital data byte to appear at the output?

a. Variation in an input digital data
b. Output data remains constant despite changing input digital data
c. Variation in an output data with respect to input data variation
d. Cannot Predict

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2. How is the latch interfacing with the microcontroller related to the number of digital output functions?

a. It increases the number of digital output functions in a time multiplexed manner
b. It decreases the number of digital output functions in a time multiplexed manner
c. It increases the number of digital output functions in a frequency multiplexed manner
d. It decreases the number of digital output functions in a frequency multiplexed manner

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3. What is the correct chronological order/sequence of steps associated with the latch operations given below?

A. Loading the data on output port
B. Increment in the digital output functions by using microcontroller pins
C. Application of latch enable signal to desired latch

a. A,B,C
b. A,C,B
c. C,A,B
d. B,A,C

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