knwn bugs


Hello out there,

i have heard about some known bugs of different hp calcs (HP41, HP35 etc). Is there a list or discribtion of these bugs available ? Is a calculator with bugs easier/harder to find than one with no bugs ?

Thanks for an answer



Some are listed in the collectors corner. More bugs are welcome.


What about the Y2K bug? Can my HP-35 handle it, or will it explode on New Year's Eve???

Thanks, Frank


Ah! The exploding-HP35-on-the-millenium bug. Yeah Frank, I'm afraid its time to wave goodbye to your faithful old friend and bury it in that lead lined carrying case you bought (you did buy the lead-lined case didnt you?). HP designed a tiny nuclear battery powered CMOS countdown clock disguised as a capacitor into all their machines, taking the battery out won't fix things. The picture at gives some idea of the power of the explosion (what HP didnt tell you was the exposure time of this photo, you though it was a normal snap, in reality the exposure time was around 1x10-6 seconds). Beware, timing 27 years exactly is not an exact science as the Mars Explorer scientists found out to their cost, they used a '35 board as a maths coprocessor (slow but sure) and look what happened! I'd stop using the HP35 now and bury it in a deep hole (around 8ft), surround it with barbed wire and claim tax relief for a 'containment vessel'. Hope this helps,


Australia is a nice wide open country...

And while so many of our greenie friends seem to be against nuclear waste disposal here, I'm willing to make an exception.

Send all of your HP calculators to me and I will ensure that they explode in the furthest reaches of Australia.

Note that ALL calculators have ths nuclear explosive in a capacitor, from the early 98xx desktop models to the HP49. Note that HP's mod to the TI calc to make it into the HP6 was to add the "capacitor".

Don't delay -- send your calculators to me today!!!!

p.s. you pay for freight


OK, OK, I get it!! Thanks for your generous advice, you guys! Nice of you to try and help me out!



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