HP 35s missing keystrokes

[Thomas Radtke]

(04-25-2014 03:34 PM)r. pienne Wrote:  There was a thread back in early 2008 on the old forum where several people complained about missing keystrokes on their 35s: http://www.hpmuseum.org/cgi-sys/cgiwrap/...ead=131932 , but I have not been able to find any complaints after that, which suggests that the problem might have affected only early batches.

Doubt it. The problem appears when typing faster than the keyboard matrix can be read. Maybe it has something to do with multiplexing IOs or similar.

You don't hear about it anymore as, after much enthusiasm in 2007, the 35s is mostly forgotten among professionals after all those bugs were discovered.

But yes, singles keys may give up the ghost at any time. My cursor down key, especially problematic since it isn't hinged in favour of this silly joypad arrangement, needs a firm press to become registered.