1.5c Data Transmission

Serial and Parallel

Both transmit with binary
Bit Rate (BAUD)

Serial - sends 1 bit at a time
Parallel - sends 1 byte at a time. It is faster, but there is a higher chance for more errors, therefore less reliable.

Simplex

1 way communication

e.g. TV,Keyboard

Duplex Modes

Half Duplex

2 way communication (however only 1 can communicate at a time)

e.g. Walkie-Talkie

Full Duplex

2 way communication (both can communicate at the same time)

e.g. Phone, Ethernet

 

Thanks to Josh AsCompBlog