# 引脚控制

## 简介

实现引脚控制的第一步是定义引脚，这一步使用 `pinMode()` 函数，这一步决定了该引脚是输入还是输出。

然后我们使用例如 `digitalWrite()` 的函数控制引脚的具体电位。

## 目录

{% content-ref url="/pages/-MUcu6O4ujYjsjwguIsL" %}
[pinMode](/core/io/pinmode.md)
{% endcontent-ref %}

{% content-ref url="/pages/-MUd-vhFmQuJGtQCF6fI" %}
[digitalWrite](/core/io/digitalwrite.md)
{% endcontent-ref %}

{% content-ref url="/pages/-MUd2YTmWaeDV\_Y2cpCB" %}
[digitalRead](/core/io/digitalread.md)
{% endcontent-ref %}

{% content-ref url="/pages/-MUd4AXcLzwo950GJ1U9" %}
[analogWrite](/core/io/analogwrite.md)
{% endcontent-ref %}

{% content-ref url="/pages/-MUd96w1G-MajWhcxWE2" %}
[analogRead](/core/io/analogread.md)
{% endcontent-ref %}


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