This repository contains Arduino code for a calculator that accepts mathematical expressions entered through a 4x4 matrix keypad. The calculator converts the infix expression into postfix form using ...

A physical 4x4 matrix calculator and an I2C LCD display are integrated with the Arduino Uno to capture user input and display results. The project demonstrates the versatility of embedded systems, ...

We propose to make a little calculator realising the four basic arithmetical operations using one Arduino and a Nextion touch display. This calculator uses the Reverse Polish Notation, which may ...

[Andy Brown] wrote in to show off the TFT LCD adapter he’s been working on for connecting inexpensive displays to an Arduino Mega. These TFT LCD screens can be picked up on eBay for a few ...