what is the purpose of the following code? SBI DDRB, 4 CBI DDRB, 7 loop: SBIS PINB, 7 JMP next SBI PORTB, 4 JMP loop next: CBI PORTB, 4 JMP loop

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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what is the purpose of the following code? SBI DDRB, 4 CBI DDRB, 7 loop: SBIS PINB, 7 JMP next SBI PORTB, 4 JMP loop next: CBI PORTB, 4 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 B7 if its HIGH we set B4 and if it is LOW we clear B4 c. we monitor B4 if its HIGH we clear B7 and if it is LOW we set B7 d. we monitor B4 if its HIGH we set B7 and if it is LOW we clear B7
"O. 1, B/s
10
12:54 AM O
65
what is the purpose of the following
code?
SBI DDRB, 4
CBI DDRB, 7
loop: SBIS PINB, 7
JMP next
SBI PORTB, 4
JMP loop
next: CBI PORTB, 4
JMP loop
Select one:
a. we monitor B7 if its HIGH we
clear B4 and if it is LOW we set
В4
b. we monitor B7 if its HIGH we
set B4 and if it is LOW we clear
B4
C. we monitor B4 if its HIGH we
clear B7 and if it is LOW we set
B7
d. we monitor B4 if its HIGH we
set B7 and if it is LOW we clear
B7
II
Transcribed Image Text:"O. 1, B/s 10 12:54 AM O 65 what is the purpose of the following code? SBI DDRB, 4 CBI DDRB, 7 loop: SBIS PINB, 7 JMP next SBI PORTB, 4 JMP loop next: CBI PORTB, 4 JMP loop Select one: a. we monitor B7 if its HIGH we clear B4 and if it is LOW we set В4 b. we monitor B7 if its HIGH we set B4 and if it is LOW we clear B4 C. we monitor B4 if its HIGH we clear B7 and if it is LOW we set B7 d. we monitor B4 if its HIGH we set B7 and if it is LOW we clear B7 II
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