• _Serial
  • _{1 bit at a time}
  • _{slower than parallel (19.2 Kbps)}
  • _{transmit farther than parallel (50 feet)}
  • _{used between 2 computers, printers, DTEs}
  • _{serial uses 1 wire for data}
  • _{often a 25 or 9 pin male/RS-232 connection (see figures 2-4 and 2-5 on pages 37 and 38)}