Programmable Calculators



#2

I find nice site online that I do not see listed here in links. http://www.rskey.org/index.html is link to site. If you already know of site, I apologize, just I not see it listed so I am not sure if it new or not.


#3

It's not new, and hasn't been updated in a while, but you're right, it's a very nice site.


#4

I wonder why it not listed on this site. Maybe over site by Mr Hicks.

#5

Quote:
I find nice site online that I do not see listed here in links. http://www.rskey.org/index.html is link to site. If you already know of site, I apologize, just I not see it listed so I am not sure if it new or not.

Hi,

It's not new, but the rskey.org is a nice site and certainly something for hpmuseum.org to consider adding to Links to other sites.

I think it was also this site where I first came across the caution on powering up woodstock era (HP 21-29c) calculators w/o their batteries, viz:

"Unfortunately, the construction of the [woodstock] calculators provided for the uneven heating of the batteries during charging, leading to premature battery wear. The design of the charging circuit also made it possible for the calculator to receive excessive voltage when a battery pack was not properly inserted, causing the calculator's sensitive MOS circuits to fail."

...although I don't think the above caution is unique to the rskey.org site.

...b

Edited: 13 Aug 2007, 9:14 p.m.


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