MSP430G2553 based DIY calculator
![](https://embedded-lab.com/blog/wp-content/uploads/2015/08/TIcalculator-580x280.jpg)
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Chris Chung’s entry to 2015 Hackaday Prize is a MSP430G2553 powered DIY calculator that executes microcodes for Hewlett-Packard old-time HP-21, HP-25C and HP-33C calculators.
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Chris Chung’s entry to 2015 Hackaday Prize is a MSP430G2553 powered DIY calculator that executes microcodes for Hewlett-Packard old-time HP-21, HP-25C and HP-33C calculators.
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