[grantwu]

This article prompted the following questions for me:

1. How well did the historical systems do, and why? Presumably non-negligible key travel is not a modern invention.

2. How much of the latency is key travel? (i.e. what korethr said)

3. How exactly were the keys pressed/how fast were they pressed? All the article says about the experimental setup is "The start-of-input was measured by pressing two keys at once – one key on the keyboard and a button that was also connected to the logic analyzer."

[digi_owl]

1. i suspect it comes down only a single program having full reign of the system at a time, and everything living in either RAM or ROM (no page faults etc).