| Word | Description |
| Bandwidth | How much stuff you can send through a connection. Usually measured in bits-per-second (bps.) A full page of English text is about 16,000 bits. A fast modem can move about 57,000 bits in one second. Full-motion full-screen video would require roughly 10,000,000 bits-per-second, depending on compression. |
| BNC | (Bayonet Fitting Connector aka British Naval Connector) A durable "professional" cable connector, attaches to VCRs for transfer of high-frequency composite video in/out signals. Connects with a push and a twist. |