The Uno is a microcontroller board based on the ATmega328P. It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz quartz crystal, a USB connection, a power jack, an ICSP header and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with an AC-to-DC adapter or battery to get started.
· ATmega328 microcontroller
· Input voltage - 7-12V
· 14 Digital I/O Pins (6 PWM outputs)
· 6 Analog Inputs
· 32k Flash Memory
· 16 MHz Clock Speed.
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