Arduino UNO is a very valuable addition in electronics that consists of a USB interface, 14 digital I/O pins(of which 6 Pins are used for PWM), 6 analog pins and an Atmega328 microcontroller. It also supports 3 communication protocols named Serial, I2C and SPI protocol.
Microcontroller Microchip ATmega328P
Operating Voltage 5V
USB Standard Type B
Digital I/O Pins 14
PWM Digital I/O Pins 6
Analog Input Pins 6
Flash Memory 32 KB
SRAM 2 KB
EEPROM 1 KB
Clock Speed 16 MHz