Interfacing LCD with Atmel 89C51 - MCQs with answers

Interfacing LCD with Atmel 89C51 - MCQs with answers

1. On which factors do the delay between two characters depend for display purposes in LCD?

a. clock frequency
b. display module
c. both a & b
d. none of the above

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2. How many data lines are essential in addition to RS , EN and RW control lines for interfacing LCD with Atmel 89C51 microcontroller?

a. 3
b. 5
c. 8
d. 10

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3. Which is the an alternative mechanism of preventing the software to be dependent on several delay factors along with an optimum time proficiency of checking LCD status at the interfacing level?

a. Polling of DB7 bit of the data bus
b. Updating the faster display in less time
c. Generalization of clock frequency and display module
d. All of the above

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