Section 1 Flashcards
1
Q
What is simplex communication?
A
One way data transfer
2
Q
What is half duplex communication?
A
Two way data transfer, only one at time
3
Q
What is duplex communication
A
Two way data transfer that can go both directions simultaneously
4
Q
What is synchronous transmission
A
common clock between both communicator and receiver (most to least)
5
Q
What is asynchronous transmission
A
no common clock for transmission (least to most)
6
Q
Characteristics of asynchronous transmission
A
Idle (a mark (1)), start (a space (0)), parity (optional (either 1 or 0)), stop (mark)
7
Q
What are CPS and how do you calculate them?
A
Characters per second
1 Char. = Data + parity + stop + start
8
Q
TTL (transistor transistor logic) voltage levels
A
0V(0) - 5V(1)
