Microprocessor 8085

This technical brief explains some low-level details of the widespread—I might even say ubiquitous—UART communication interface.

It's now possible for thieves to crack your PIN based on how you hold your phone when you input it.

The digital inputs and outputs (digital I/O) on the Arduino are what allow you to connect sensors, actuators, and other ICs to the Arduino . Learning how to use the inputs and outputs will allow you to use the Arduino to do some really useful things, such as reading switch inputs, lighting indicators, and controlling relay outputs.