- All spare cycles are used to get a more accurate data line sample (waaaay more than actually needed, but this helps against noise) - Switched to a pre/release (add/remove) rather than an add->clear mechanism (or a buffer+debounce/add->clear) - Note that a pull-down resistor is NEEDED on the data line |
||
|---|---|---|
| .. | ||
| BETKB | ||
| BudKeypad | ||
| EpsonQX-10 | ||
| HeathZenith | ||
| HP150 | ||
| IBMConvertible | ||
| Kaypro1 | ||
| matrix | ||
| MicroSwitch8304 | ||
| SKM67001 | ||
| SonyNEWS | ||
| SonyOA-S3400 | ||
| Tandy1000 | ||
| UnivacF3W9 | ||