The port that can source or sink 4 LS TTL inputs when being used as an output port on each of its line is
A. Port 1
B. Port 2
C. Port 3
D. all of the mentioned
Answer:A
The port that can source or sink 4 LS TTL inputs when being used as an output port on each of its line is
A. Port 1 B. Port 2 C. Port 3 D. all of the mentioned
Explanation: The ports P1, P2 and P3 can source or sink 4 LS TTL inputs when being used as an output port on each of its line.