BAUD

A unit commonly used to describe the speed of modems .The baud rate technically is the number of times a modem signal changes per second .A 28.8 modem is actually is working at 2400 baud,but each signal change carries 12 bits of information.Therefore the data transfer rate is 28,800 bits per second.Over the years ,baud and bits per second have been used interchangeably,although that is technically wrong.