Arduino Uno rev 3开发板
The Arduino Uno Rev 3 is a microcontroller board.
Arduino Uno Rev 3是一个微控制器板。
This is the reference Arduino version for prototyping, as lots and lots of tutorials use this version of Arduino as their reference board.
这是原型的参考Arduino版本，因为很多教程都使用此版本的Arduino作为参考板。
It has the same form factor and size of the Arduino 101, Arduino Zero, Arduino Yún, Arduino Leonardo, Arduino Uno Wifi rev 2 and Arduino Ethernet.
它具有与Arduino 101，Arduino Zero，ArduinoYún，Arduino Leonardo，Arduino Uno Wifi rev 2和Arduino Ethernet相同的外形尺寸。
It comes with an 8-bit microcontroller, an ATmega328P, which comes with 32 KB of Flash memory, 2 KB of SRAM and 1 KB of EEPROM.
它带有一个8位微控制器 ATmega328P ，它带有32 KB的闪存，2 KB的SRAM和1 KB的EEPROM。
The Arduino runs at 16MHz at a voltage of 5V, and can be powered with a recommended input ranging from 7V to 12V.
Arduino在5V的电压下以16MHz的频率运行，并可以通过建议的7V至12V范围的输入供电。
In terms of I/O, the Arduino Uno has an USB-B port that can be used by a computer to transfer new programs to run, a power input and a set of I/O pins. It has 20 I/O pins, 14 digital and 6 analog pins that have 10 bits, mapping values from 0 to 1023.
在I / O方面，Arduino Uno有一个USB-B端口，计算机可以使用它传输要运行的新程序，一个电源输入和一组I / O引脚。 它具有20个I / O引脚，14个数字引脚和6个具有10位的模拟引脚，映射值从0到1023。
In the above picture, we can see at the top the 14 digital I/O pins, which can be configured to be output pins or input pins programmatically.
在上图中，我们可以在顶部看到14个数字I / O引脚，可以通过编程将其配置为输出引脚或输入引脚。
At the bottom, we have the power pins, and the 6 analog input pins.
在底部，我们有电源引脚和6个模拟输入引脚。
There is a built-in led, linked to pin 13, that offers us status information.
有一个内置的LED引脚连接到引脚13，可为我们提供状态信息。
The Arduino Uno comes with an USB port that allows you to connect it to the computer and load a program on it.
Arduino Uno带有USB端口，可让您将其连接到计算机并在计算机上加载程序。
The Arduino has no operating system, and it runs one single program at a time.
Arduino没有操作系统，并且一次运行一个程序。
Once a program is loaded, it is booted any time the Arduino is powered, either via USB or via the power port via a AC-to-DC power cable or a battery. This means that once you load the program, you can put the Arduino on a mountain with a solar panel and a battery, and it will keep running until there’s power.
程序加载后，只要通过USB或通过AC / DC电源线或电池通过电源端口为Arduino供电，就可以启动该程序。 这意味着，一旦加载程序，就可以将Arduino放在带有太阳能电池板和电池的山上，并且它将一直运行直到有电为止。