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A case against the x<>y key
05-12-2015, 01:41 AM
Post: #46
RE: A case against the x<>y key
(05-12-2015 12:35 AM)Den Belillo (Martinez Ca.) Wrote:  Les; Did your Sinclair suffer from less that optimally de-bounced keys and battery wiggle power off too? Mine does, but on the other hand, the screen is a nice color.

Probably - it was a long time ago. When I first built it, it didn't work at all, but I accidentally discovered that freezing it got it going, so I used to put it in the freezer, set up a control systems problem (Routh-Horwitz, etc.) then pull it out and run the numbers as fast as possible before the calculator warmed up and stopped working.

It turned out to be a faulty clock generator circuit - TI supplied a batch of faulty chips - and Sinclair Radionics reworked it. But it was so limited that it only served to make me save hard for that HP-45, and so I didn't use it for much longer. I've no idea what happened to it, but I don't really miss it much. Wink

--- Les
[http://www.lesbell.com.au]
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Messages In This Thread
A case against the x<>y key - hansklav - 05-09-2015, 10:49 PM
RE: A case against the x<>y key - Les Bell - 05-10-2015, 12:56 AM
RE: A case against the x<>y key - hansklav - 05-10-2015, 10:25 AM
RE: A case against the x<>y key - hansklav - 05-10-2015, 10:37 AM
RE: A case against the x<>y key - hansklav - 05-10-2015, 10:43 AM
RE: A case against the x<>y key - hansklav - 05-10-2015, 02:32 PM
RE: A case against the x<>y key - hansklav - 05-10-2015, 03:51 PM
RE: A case against the x<>y key - hansklav - 05-11-2015, 12:09 AM
RE: A case against the x<>y key - Les Bell - 05-11-2015, 12:24 AM
RE: A case against the x<>y key - Les Bell - 05-11-2015, 12:20 AM
RE: A case against the x<>y key - Tugdual - 05-10-2015, 04:06 AM
RE: A case against the x<>y key - d b - 05-10-2015, 05:16 AM
RE: A case against the x<>y key - hansklav - 05-10-2015, 10:59 AM
RE: A case against the x<>y key - hansklav - 05-10-2015, 09:37 PM
RE: A case against the x<>y key - Les Bell - 05-11-2015, 03:39 AM
RE: A case against the x<>y key - hansklav - 05-11-2015, 09:41 PM
RE: A case against the x<>y key - Les Bell - 05-11-2015, 04:18 AM
RE: A case against the x<>y key - Les Bell - 05-11-2015, 06:10 AM
RE: A case against the x<>y key - RMollov - 05-11-2015, 09:49 AM
RE: A case against the x<>y key - Les Bell - 05-11-2015, 10:27 PM
RE: A case against the x<>y key - hansklav - 05-17-2015, 10:49 PM
RE: A case against the x<>y key - d b - 05-12-2015, 12:35 AM
RE: A case against the x<>y key - Les Bell - 05-12-2015 01:41 AM



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