A keypad is one of the most commonly used input devices in microprocessor applications. In a standard keypad wired as an X-Y switch matrix, normally-open switches connect a row to a column when ...

The project presents the code that is used to perform keyboard polls, character translation, and management of LOCK keys while showing the results in a LCD. The project presents the code that is used ...

A secure electronic voting system with real-time authentication and keypad enables accurate, tamper-proof voting through ...

[Tony] has developed a method of using a state machine to validate keypad inputs. His method checks the commands character by character as they are entered in by a 16 button keypad. State machines are ...

The Arduino is a cheap electronics board that allows you to make your own electronics without a ton of coding experience. We love the Arduino, but like any electronics project, coming up with ideas ...

With their cheap price tags, massive I/O provisions, and low power consumption, microcontrollers like the uber-popular ...