The Esc key was born in 1960, when an I.B.M. programmer named Bob Bemer was trying to solve a Tower of Babel problem: computers from different manufacturers communicated in a variety of codes. Bemer invented the ESC key as way for programmers to switch from one kind of code to another.
To the aficianado, a clicky keyboard is the only keyboard. For PC users, nothing is better than an IBM Model M. For Apple lovers, it never got better than the Apple Extended Keyboard II. [more inside]
You may have never heard of it, but you've damn near certain heard it. The Mellotron (FortuneCity link) is a keyboard instrument; each of its keys triggers a tape with a pre-recorded instrument on it. It was effectively the world's first sample player. [more inside]
I've been using a folding, portable keyboard with my Visor for about a year now. Very handy. On Monday, Siemens unveiled an even more portable one at CeBIT. (My first post. Hope it's appropriate.)