Interfacing LCD with Atmel 89C51 - MCQs with answers
Interfacing LCD with Atmel 89C51 - MCQs with answers1. 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 aboveView Answer / Hide Answer2. How many data lines are essential in addition to RS , EN and RW control lines for interfacing LCD with Atmel 89C51 microcontroller?
d. 10 View Answer / Hide Answer3. 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 aboveView Answer / Hide Answer
ANSWER: a. Polling of DB7 bit of the data bus