单片机数码硬件软件设计实验的相关内容

复习单片机：动态数码管(1 数码管介绍+2 74HC245 和 74HC138 芯片介绍+3 硬件设计+4 软件设计+5 实验现象)

本章所要实现的功能是：控制动态数码管从左至右显示数字 0-7。学习本章可以参考前面的实验章节内容。本章分为如下几部分内容：1 数码管介绍2 74HC245 和 74HC138 芯片介绍3 硬件设计4 软件设计5 实验现象1.数码管介绍1.1 多位数码管简介多位数码管，即两个或两个以上单个数码管并列集...

复习单片机:静态数码管(内含1 数码管介绍+2 硬件设计+3 软件设计+4.原始代码+5 实验现象) (注：数码管介绍和硬件设计是重点)

1 数码管介绍1.1 数码管简介数码管是一种半导体发光器件，其基本单元是发光二极管。数码管也称 LED数码管.按发光二极管单元连接方式可分为共阳极数码管和共阴极数码管。共阳数码管是指将所有发光二极管的阳极接到一起形成公共阳极(COM)的数码管，共阳数码管在应用时应将公共极 COM 接到+5V，当某...

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