[The Antiyuppie]

“The hall effect is used in many sensors used in our engines. Gasoline or diesel. ...”

And they work really well, too - until they don’t! The effect is very small, and requires an electronic amplifier, which usually drops dead after several years of exposure to heat (from the engine or in anti-lock brakes).

Back in the day, really, really good computer keyboards used hall-effect switches - completely immune to dirt and dust,inherently bounce-free and would last “forever”. In the race to the bottom, these aren’t made anymore.

[palmerizedCaddis]

They aren't made today but I still have one of those things working on a SWTPC 6809 computer I built to replace an Altair that I built while I was stationed in a much in the recent news southwest Asian locale. The old computer still encrypts things better than any modern one I have. Zibegniev Brezinski recalled us about a year before the American media began describing the Ayatollah Khomeini as a benign old holy man. The Jimmah Carter loving illegitimate drummed us out of the US Army. Foia the reports sent to the morons from Tehran. The keyboard was manufactured by an American company Microswitch, a part of Honeywell. Caddis the most elder

[dsc]

Love your tag line; can’t remember where it’s from.