Clients
Terminals
- Video display unit (VDU) or Cathode ray tube (CRT), keyboard
- Dumb terminals do not participate in the processing of the data the display (no data storage, memory or microprocessors)
- asynchronous transmission (when a character is typed it is
- transmitted to the host’s buffer; host has to process every character)
Intelligent Terminals
- has an internal memory and a built-in, programmable microprocessor chip.
- simple processing functions such as moving a cursor are done by the terminal
- synchronous transmission