| A | B |
|---|
| Data communication | the transmission of data from one computer to another or to a peripheral device |
| Protocols | the rules that establish an orderly transfer of data |
| Data bus | the path between the processor, RAM, and peripherals along which communication travels |
| Port | where the external peripheral device is connected to the computer |
| Parallel port | transfers 8 bits of data at a time |
| Serial port | transfers 1 bit of data at a time |
| SCSI port | allows more than one peripheral devices to plug in to the same port; pronounced scuzzy; |
| USB port | a high-speed serial port which allows multiple connections at the same port |
| Ethernet port | a port that transfers data at high speed and often connects to a network or the Internet |
| Device driver | a computer program that allows a computer and a peripheral device to communicate because it contains information about both devices |
