DIY Calculator using Arduino UNO and TFT LCD Touch Screen Shield
GitHub - PranaySadavarte/Touchscreen-TFT-Calculator: •This is a program used to make a TFT touchscreen calculator that performs all the basic operations with a visually appealing user interface.•This project requires an Arduino UNO R3
basic arduino tutorial: Project I - 17. Calculator Apps using LCD Touch Screen (Arduino Based)
DIY Calculator using Arduino UNO and TFT LCD Touch Screen Shield
Arduino touch screen calculator with TFT LCD - Exhibition / Gallery - Arduino Forum