The Arduino Uno is a microcontroller board based on the ATmega328 chip. The Arduino Uno has 14 digital input / output pins (of which 6 can be used as PWM output), 6 analog inputs, a 16 MHz ceramic resonator, a USB connector, a power jack, an ICSP header and a reset button. Suggest adaptation
The Arduino Uno is by far the most popular development board for beginners and advanced. Because the ATmega328 is not soldered, it can easily be replaced when a catastrophic mistake is made. By buying this (original) version, the Arduino community is supported, so that new platforms can be developed.