Introduction to Serial Communication There are two forms of transmission, these are Serial Communication Parallel Communication Serial Communication Parallel Communication Communication over a single wire Communication over multiple wires, generally over 8 wires to carry a byte of data Slower and cheap Faster but costlier Require Parallel to serial and serial to parallel conversion for transmitting and receiving of data No such conversion is required Baud rate: Baud rate plays an important rle in the communication of serial data. This is the rate at which serial data is transferred. Its unit is bits/sec. Baud rate=1/(time between signal transitions). Example-1 is the signal is changing every 6.3ms, then baud rate= 1/(6.3x10-3)=600bd. Example-2: each character contains a start bit, 7 information bits, a parity bit, one stop bit making a total