These pins can operate with 5V, and every digital pin can give or receive 20mA, & includes a 20k to 50k ohm pull up resistor. We know that an arguing Uno R3 includes 14-digital pins which can be used as an input otherwise output by using the functions like pin Mode (), digital Read(), and digital Write(). The power pins of an Arduino board include the following.
The battery terminals can be placed in the pins of Vin as well as GND. The connection of an adapter can be done by plugging a center-positive plug (2.1mm) into the power jack on the board. The exterior power supply (6 to 20 volts) mainly includes a battery or an AC to DC adapter. The power supply of the Arduino can be done with the help of an exterior power supply otherwise USB connection. This board includes 14 digital input/output pins, Analog inputs-6, a USB connection, quartz crystal-16 MHz, a power jack, a USB connection, resonator-16Mhz, a power jack, an ICSP header an RST button. From these pins, 6-pins can be utilized like PWM outputs. The Arduino Uno R3 pin diagram is shown below. The weight of the Arduino board is 25 g.Length and width of the Arduino are 68.6 mm X 53.4 mm.Flash Memory -32 KB, and 0.5 KB memory is used by the boot loader.The recommended input voltage ranges from 7V to 12V.The Operating Voltage of the Arduino is 5V.It is an ATmega328P based Microcontroller.
