ARDUINO UNO REV3
Description：
The Arduino Uno is a microcontroller board that is based on the ATmega328P microcontroller. It is designed for easy use, with all the components needed to support the microcontroller built onto the board.
The board features:
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 In-Circuit Serial Programming (ICSP) header
A reset button
The Uno can be powered using a USB cable, an AC-to-DC adapter, or a battery. It has an operating voltage of 5V, and a recommended input voltage of 7-12V, with a limit of 6-20V.
The board can safely be tinkered with, as the microcontroller chip can be easily replaced if something goes wrong.
Other technical specifications of the board include:
Maximum current of 20 mA for each digital input/output pin
Maximum current of 50 mA for the 3.3V pin
32 KB of flash memory (with 0.5 KB used by the bootloader)
2 KB of SRAM
1 KB of EEPROM
A clock speed of 16 MHz
A built-in LED on pin 13
The dimensions of the board are 68.6 mm in length and 53.4 mm in width, with a weight of 25 g.
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ARDUINO UNO REV3
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