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说明：  基于zigbee技术CC2530 开发控制步进电机(Development and Control of Stepping Motor Based on Zigbee Technology CC2530)

Keil C51单片机开发环境的仿真工具，能够仿真各端口的输入输出。(Keil C51 microcontroller development environment simulation tool, the simulation of the input and output ports.)

Cell Radius In Long Term Evolution 4G

基于芯片LPC2132的步进电机控制的基本实验(Chip LPC2132 stepper motor control experiment)

飞思卡尔8位单片机MC9S08教程详解不带历程(Freescale 8-bit microcontroller MC9S08 Detailed tutorials)

elcirc三维环流模型，可以计算河流、河口、海洋、湖库等水流、温度、盐度输移(ELCIRC is an unstructured-grid model designed for the effective simulation of 3D baroclinic circulation across river-to-ocean scales. It uses a finite-volume/finite-difference Eulerian-Lagrangian algorithm to solve the shallow water equations, written to realistically address a wide range of physical processes and of atmospheric, ocean and river forcings. The numerical algorithm is low-order, but volume conservative, stable and computationally efficient. It also naturally incorporates wetting and drying of tidal flats. While originally developed to meet specific modeling challenges for the Columbia River, ELCIRC has been extensively tested against standard ocean/coastal benchmarks, and is starting to be applied to estuaries and continental shelves around the world.)

线路通断检测器的设计： 1．用压电陶瓷蜂鸣片作为电声元件。 2．用两根导线作为测试探针 3．线路通断是通过测试电阻的大小来判断，有以下三种情况： （1）若150Ω<Rx<900Ω，则蜂鸣片不发出声响。 （2）若Rx>900Ω或者Rx<150Ω，则蜂鸣片发出间歇式的滴－滴声响。 以上各临界阻值（150Ω和900Ω），允许误差±10％ 4．＋15V直流稳压电源需要设计。 (Line-off detector design: 1. Piezoelectric ceramic buzzer as the electro-acoustic components. 2. As a test probe with two wires 3. Lines off by testing the resistance to determine the size, the following three conditions: (1) If 150Ω <Rx <900Ω, the buzzer is not audible. (2) If Rx> 900Ω or Rx <150Ω, then the buzzer sent intermittent drip- drip sound. Above the critical resistance (150Ω and 900Ω), tolerance ± 10 4.+15 V DC power supply need to design. )

说明：  一个普通的测量信号频率，主要计算频率计算频率是计算频率(signal frequency)

基于STM32的开关电源设计论文+开关电源原理图，其本质就是DC-DC设计。(STM32-based design of switching power supply switching power supply schematic thesis+, its essence is DC-DC design.)

robot Puma 365 controlled by PID Fuzzy