From Wikipedia, the free encyclopedia   (Redirected from 8N1)
Jump to: navigation, search  8-N-1 is a common shorthand
notation for a serial port parameter setting or configuration in
asynchronous mode, in which there are eight (8) data bits, no
(N) parity bit, and one (1) stop bit.[1] As such, 8-N-1 is the
most common configuration for PC serial communications today.
The abbreviation is usually given together with the line speed
in bits per second, as in 9600/8-N-1. The speed includes bits
for framing (stop bits, parity, etc.) and the effective data
rate is lower than the bit transmission rate. For 8-N-1
encoding, only 80% of the bits are available for data (for every
eight bits of data, ten bits are sent over the serial link — one
start bit, the eight data bits, and the one stop bit). This mode
was also commonplace for the link between modems until the 1990s
when Link Access Procedure for Modems became widespread. 8-N-1
continued in use for the computer to modem connection.[1]     1.
^ a b "What does 8-N-1