UNO Board has 16 digital OUTPUT pins.
Arduino IDE Program is a program that is used for programming controllers and can convert such files to upload to the Arduino board.
UNO board is a microcontroller board that uses IC number ATmega328P as the main IC. Inside the IC there are 14 digital pins of INPUT and OUTPUT (can be used as 6 pins of PWM output). Analog 6 pins are available.