Please quickly what is the purpose of the following code?CBI DDRB, 4SBI DDRB, 7loop: SBIC PINB, 4JMP nextCBI PORTB, 7JMP loopnext: SBI PORTB, 7JMP loopSelect one:a. we monitor B7 if its HIGH we clear B4and if it is LOW we set B4b. we monitor B4 if its HIGH we set B7 andif it is LOW we clear B7O c. we monitor B7 if its HIGH we set B4 andif it is LOW we clear B4O d. we monitor B4 if its HIGH we clear B7and if it is LOW we set B7

Option (d) is the correct answer.

Answered: what is the purpose of the following…

Engineering

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what is the purpose of the following code? CBI DDRB, 4

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

Please quickly

what is the purpose of the following code?
CBI DDRB, 4
SBI DDRB, 7
loop: SBIC PINB, 4
JMP next
CBI PORTB, 7
JMP loop
next: SBI PORTB, 7
JMP loop
Select one:
a. we monitor B7 if its HIGH we clear B4
and if it is LOW we set B4
b. we monitor B4 if its HIGH we set B7 and
if it is LOW we clear B7
O c. we monitor B7 if its HIGH we set B4 and
if it is LOW we clear B4
O d. we monitor B4 if its HIGH we clear B7
and if it is LOW we set B7

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