DIY Calculator

[Steve Simpkin]

(04-09-2019 03:25 PM)agarza Wrote:  

(04-09-2019 11:22 AM)Dave Britten Wrote:  Hey, if Sinclair can make a programmable scientific calculator with half the ROM of an HP-35, then a 32KB AVR should be no sweat! ;D

Since it's an AVR, I would suggest including a USB programming port (would that model require an external USB-to-TTL chip?) and leaving the Arduino bootloader on it. It would make for a very nice platform for experimentation.

I have no idea how Sinclair did such a feat. I have run out of memory.

Here is how Sinclair's Nigel Searle achieved a scientific calculator (non-programmable) in under 320 words of code.
http://files.righto.com/calculator/sincl...lator.html