数码管的显示操作，同时也有按键操作程序，通过单片机控制可以直接进行显示

多点烟雾,温度探测报警程序 基于MSP430F247,485总线.-More smoke and temperature detection alarm procedures based on the MSP430F247, 485 bus.

详细介绍RS-485/422原理与区别、元件选择、参考电路、通讯规约、程序设计等方面的应用要点，以及在产品实践中总结出的一些经验、窍门-Detail the difference between theory and RS-485/422, component selection, reference circuits, communications statute, procedures for the application of design elements, as well as practice in the products sum up the experience, know-how

此为按键部分的,读取按键值是否有按键判断部分函数-this as part of the button, reading keys value judgment whether some function keys

一些驱动程序和显示程序及传感器的简单应用,再软件和硬件上全部调试通过,可以直接使用-Some drivers and display program and a simple sensor application, and then all the software and hardware debugging through, you can directly use

pwm的输出实验，运用内部数模转换器产生PWM波并输出-pwm output of experiments, the use of PWM wave generated within the DAC and output

51单片机的源程序集，有存储器，点阵式液晶，进制转换，led,ad等。-51 SCM source collection, storage, dot-matrix LCD, the base for the conversion, led, ad so.

GPL162001语音录制和播放的演示程序

单片机控制步进电机程序源码，希望能帮助到需要的朋友。-Single-chip stepper motor control program source code, hoping to help a friend in need.

该文档包含了基于c8051f020的各种源码，包括AD、DA，串口，定时器，IIC以及时钟键盘等，很具有学习意义-This document contains a variety of source-based c8051f020, including AD, DA, serial port, timers, IIC and clock keyboard, it is with learning the meaning

使用protel99软件编辑的原理电路图，希望对各位有助于电路图的学习和开发-The use of the principle of circuit protel99 software editor, in the hope you will help the study and development of circuit