| A | B |
| 6-pin mini DIN | Keyboard and mouse connectors introduced on teh IBM PS/2; also known as PS/2 connector. |
| A/V Ports | Various connectors and plugs that allow the connection of audio and video devices. |
| Adapter | A piece of hardware that enables the addition of a peripheral device to a computer. |
| AGP | The specialized 32-bit expansion slot on a motherboard used only for video cards. |
| BNC | Connector used to terminate coaxial caable used in 10Base2 networks. |
| Byte | 8 bits. |
| Centronics interface | 36 pin connector used on the parallel printers and cables. |
| Combo Card | An Ethernet card that has 2 or more connectors for Ethernet and /or BNC and /or AUI. |
| DB-25 | Male port on older PC's for serial connector; female port is printer port LPT1. |
| DB-9 | Male port is COM1 connector on PC. |
| Demodulation | The process of converting a sound wave froman analog signal into the digital form needed by a computer. |
| DIN Connectors | AT keyboard port or connector. |
| Expansion bus | The pathway to move data around on a motherboard or other printed circuit board. |
| Expansion cards | Hardware devices that allow the addition of optional components to a computer. |
| Expansion Slot | A socket in a motehrboard into which adapter cards can be inserted. |
| Firewire | The IEEE 1394 standard for transferring digital audio and video at speeds of up to 400 Mbps; used mostly in digital cameras. |
| I/O port | Input/Output port; any port for transferring data into and out of the computer. |
| Integrated | Devices that are built onto the motherboard such as the video or network adapters. |
| ISA | A 16 bit expansion slot that was introduced on motherboards supporting 286 processors. |
| Keyboard Port | AT or PS/2 connector on computer used to plug in the input device used mainly for word processing. |
| Line-in | Connector on a sound card generally used for a microphone but can also be used to bring in sounds from other sources. |
| Modem | Hardware device used to provide a dial-up connection for network services. |
| Modulation | The process of converting a digital signal into analog sound waves for transmission onto phone lines. |