使用MSP430F413的低功耗水表系统，在空闲时电流3.5uA

TLC549是一种采用8位逐次逼近式工作的A/D转换器。内部包含系统时钟、采样和保持、8位A/D转换器、数据寄存器以及控制逻辑电路。TLC549每25uS重复一次“输入―转换―输出”。器件有两个控制输入：I/O CLOCK和片选（CS）。 内部系统时钟和I/O CLOCK可独立使用。应用电路的设计只需利用I/O时钟启动转换或读出转换结果。当CS为高电平时，DATA OUT处于高阻态且I/O时钟被禁止。 -TLC549 is a used 8-bit successive approximation type of work the A/D converter. Contains the internal system clock, sample and maintain, an 8-bit A/D converter, data register and control logic circuit. TLC549 each repeat 25uS

通用的餐饮收费系统:其主要技术是通过计算机串口与IC卡相关设备进行数据交互.-Common food and beverage charges system: Its main technology is the computer serial port and IC card relevant equipment data exchange.

This version of the code is compatible only with the AT89C2051 due to the location of the data buffer and stack in RAM. The code may be modified to work with the AT89C1051 by relocating or resizing the buffer and stack to fit into the smaller amount of RAM available in the AT89C1051.

步进电机仿真项目，Protues仿真，程序简单，适合初学者。-Stepper motor simulation project, Protues simulation, the procedure is simple, suitable for beginners.

这篇程序是我一个同学编的,并且已经应用到了二相步进电机(四线步进电机)上了.但是我认为此程序需要改进的地方有很多. -This procedure is a fellow student, I made and have been applied to a two-phase stepper motor (four-wire stepper motor) on. But I think this process needs to be improved where there are many.

单片机密码-24c01-12864-4x4按键扫描 初始密码是123456,按#确认 进入后,按*修改密码-Singlechip password-24c01-12864-4x4 keypad scan the initial password is 123456, by# Confirm enter, press* Change Password

用于单片机的PID调节子程序,经过多次改进,非常实用简单,已经用于多个产品上,非常稳定可靠-for SCM PID subroutine result, a very simple and practical. has been used for many products, a very stable and reliable

winavr开发环境下的一段pwm测试程序，可精确控制led的亮度。-winavr development environment section pwm test procedure can accurately control the led brightness.

周立功单片机ARM学习板easyARM2104的测试程序等-weeks learning meritorious ARM MCU board easyARM2104 testing procedures

DS1302制作的带农历和节日提醒功能的万年历。原理图+keil源码-DS1302 produced with the Chinese and the calendar function to remind holiday. schematic+ Keil source