Differences in o devices complexity of control ☆ Unit of transfer Data may be transferred as a stream of bytes for a terminal or in larger blocks for a disk ☆ Data representation s Encoding schemes ☆ Error conditions Devices respond to errors differently DEVICE MANAGEMENTDEVICE MANAGEMENT Differences in I/O Devices ❖Complexity of control ❖Unit of transfer ٭ Data may be transferred as a stream of bytes for a terminal or in larger blocks for a disk ❖Data representation ٭ Encoding schemes ❖Error conditions ٭ Devices respond to errors differently