AriCalculator – A homemade handheld calculator

https://www.electronics-lab.com/aricalculator-homemade-handheld-calculator/

The AriCalculator is a DIY calculator or a general purpose handheld device. It is battery powered and runs on a NXP S12G240 microcontroller (16-bit, 240k flash, 11k RAM). The device has 38 input keys and a 128×64 pixel LCD display with a backlight option. Three interfaces connect the calculator to the outside world: A BDM […]