Synchronous

1
Synchronous

• - Specific relationship to a time base, clock
• - Data characters are sent according to timing
  signals
• - The signal synchronizes at least two
  communicating devices, depending on the timing
  signals

2
Asynchronous

• - Opposite of synchronous
• - The timing signals vary between the
  communicating devices

3
Remote Access

• - Communicating with a computer from a distance
• - Requirements could be Authorization code,
  Password, a Network or a Modem