what is the microcontroller used in arduino uno

The microcontroller used in Arduino Uno is the ATmega328P. It is a powerful microcontroller with a clock speed of 16MHz, 32 KB Flash, and 1 KB EEPROM. The ATmega328P provides UART TTL (5V) serial communication, which is available on digital pins 0 (RX) and 1 (TX) . The Arduino Uno board also features an ATmega16U2 programmed as a USB-to-serial converter. This allows the board to be programmed with the Arduino Software (Integrated Development Environment) and to communicate with a computer, another Uno board, or other microcontrollers.