Calculator, to achieve two four binary addition, subtraction, multiplication, division operations. Based on 51 single chip microcomputer, assembly language is used. And use Proteus 8.7 to simulate.

Filename	Size	Update
CAL.hex	668	2019-09-23
CAL.pdsprj	19761	2019-09-23
CAL.a51	1209	2019-09-22

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