ADC0809进行AD采集电压测量

数字电子时钟是一种使用数字电路技术实现时钟、分钟和秒钟定时的设备。 它在其他电子时钟中具有更高的准确性和主观性。数字钟包含扩展功能和基本功能。其中，基本功能部分：以数字形式准确定时，显示时、分、秒的功能; 扩展功能部分： 日期显示、闹钟、温度显示。(A digital electronic clock is a device that uses digital circuit technology to achieve clock, minute, and second timing. It has higher accuracy and subjectivity in other electronic clocks. The digital clock has two parts, basic functions and extended functions. Among them, the basic function part: accurate timing in digital form, display hours, minutes, seconds function; extended function part: date display, alarm clock, temperature display.)

ads1256是24位精度模数转换芯片，使用的软件模拟 spi 接口，单片机测试芯片是 C8051F020，接口为 P1.2-P1.6

基于C51控制，LM621驱动，数码管显示(BLDC control, based on DSP, LM621 driver, digital tube display)

利用单片机实现多路温度采集的C语言源代码，包含采集节点代码和通信控制机代码(Using single chip multi-channel temperature acquisition of C language source code, including the code acquisition nodes and a communication control unit codes)

在白天可以检测是否有人要进入，有的话开门，晚上可以通过密码开门，并且可转移设置密码。(During the day, you can detect whether someone will enter, or if you open the door, you can open the password at night, and you can set the password to transfer.)

说明：  通过按键调节PWM输出占空比并实时显示，最小1%最大99%(Adjust the duty cycle of PWM output and display by key-press)

l 进一步熟练掌握单片机的使用方法、提高程序的编写能力 l 掌握单片机系统外扩器件的连接与使用 l 提高器件说明书以及时序过程的阅读、理解能力 l  请点击左侧文件开始预览 ！预览只提供20%的代码片段，完整代码需下载后查看 加载中 侵权举报

数码管驱动 按键扫描程序，通讯线少 程序模块，简单(Digital tube driver button scanning program, communication line less program module, simple)

本程序是用c语言开发的，用于51串口通信的单片机程序，压缩包中包含程序运行中的所有文件。(This procedure is used c language development for 51 single-chip serial communication program, compress all the files included in the package program running.)

说明：  用51单片机驱动有感直流无刷电机，程序有详细的注释，简单明了。(The inductive DC brushless motor is driven by 51 single chip computer. The program has detailed annotations and is simple and clear.)