The efficiency of an asynchronous transmission using 1 stop bit,1 start bit and 1 parity bit is
A)20 %.
B)30 %.
C)50 %.
D)70 %.
E)80 %.

Question

Quizplus · Accepted Answer

In asynchronous transmission, each character is framed with a start bit, a stop bit, and a parity bit. This means for every 8 data bits, there are 3 additional bits (1 start, 1 stop, 1 parity), making a total of 11 bits. The efficiency is calculated as the ratio of data bits to total bits: 8/11 ≈ 0.727 or 72.7%, which is closest to 70%.

The Efficiency of an Asynchronous Transmission Using 1 Stop Bit,1