| A | B |
| Bus | Aparallel collection of conductors that carry data or control signals from unit to another. |
| Data Bus | A bidirectional pathway linking the CPU to memory and I/O devices. |
| Address Bus | A pathway that carries data generated by the CPU to the various memory and I/O elements of the computer. |
| PC Bus | The bus architectures used in the first IBM PCs, originally an 8-bit bus expanded to a 16-bit bus. |
| ISA | Industry Standard Architecture. The 8 and 16-bit original connectors used in PCs. They run at a bus speed of 8MHz modem and sound cards are ISA due to their low bandwidth requirements. |
| I/O Address | three digit number, hexadecimal |
| Jumper | A small pin placed over pins to configure them |
| Plug and Play (PnP) | This is a standard that was supposed to make adding peripherals to your system as easy as plugging them in and using them. |
| Bandwidth | A measure, in some amount of bits per second, of the amount or DATA that can be sent over a particular cable interface or Bus. |
| Adaptor | A device that allows one system to configure itself |
| DMA | direct memory access |