Types of Conversions Cont

Introduction  Q: How do we relay encoded data form the generating device to then next device? A: Interface -Defined by several popular standards -Physical layer of the OSI model -Mechanical/electrical/functional specifications ™   Digital Data Transmission Do  we  send  one  bit  at  a  time  or  do  we  group  bits  into  larger  groups  and  if  so, How? •     Parallel Transmission o    Binary data consisting of 1s and 0s may be organized into groups of 'n' bits each o    By grouping we can send data 'n' bits at a time instead of one bit •     Serial Transmission o    One  bit  follows  another,  so  we  need  only  one  channel  rather  than  'n'  to transmit data between two devices o    Conversion devices are required at the interface