Developer's Kit for HP 20b CalculatorFirst Faved : Aug 19 2008 by bradFaved : 1 time with noteViewed : 6 timesFave It!
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- brad - Aug 19 2008 | DIY, calculators, engineering
HP has published schematics and code and debugging information for one of their "next generation" calculators. It's very similar to the HP35s, which I love. The calculator has an ARM processor with built-in flash memory and unpopulated traces already provided on the PC board to add an RS-232 driver for a debugging port.
The HP20b is a better product to hack than the HP35s because it costs less and has less keys - easier to make useful changes to.
Bravo, HP!
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