| Word | Description |
| kbps | Kilobits (or thousands of bits) per second – a measure of communications speed. Peak dial-up speed is 56kbps – in contrast, broadband speeds start at 256kbps and extend to speeds many hundreds of times faster. |
| KBS (knowledge-based system) | An alternative name for an expert system, based on heuristics, each comprising the fact and conclusion. |
| Killer app | A good or service that establishes an entirely new category and, by being the first, tends to dominate the market. |