模拟/混合信号：传感器连接是信号调理成功的关键 作者：Gene Heftman，特约编辑，《Electronic Design》...

数控直流稳压电源源程序 本设计由两个电路模块构成：直流稳压源电路（+15V,+5V,-15V），程控电路。并且巧妙得反置使用D/A变换器。使程控输出电压0-9.9手动可调，步距为0.2V。并可预置电压值，采用LED同步显示。-NC DC power source circuit of the design of two modules: the source DC circuit (+15 V,+5 V,-15V), program-controlled circuit. And clever use of a reversal of D/A converter. So that the output voltage programmed manually adjustable 0-9.9, step to 0.2V. And preset voltage value, shows that the use of LED synchronization.

出租车计费系统，可通过修改数据改变计费价格及起步里程.-Taxi billing system can be changed by modifying the data on prices and start charging mileage.

一个简易的JTAG调试小板的设计原理图，可以用于ARM9和ARM7-a simple JTAG Debugging small plate design diagram, which can be used ARM9 and ARM7. .

主要给出msp430的程序代码，当然这只是嘴基本点程序集，具体程序代码还需要进一步涉及〉-MSP430 main program code is given, of course, this is only the basic point of the mouth assembly, the specific program code also needs to be further involved in

CH372 USB-UART Chip Specification Document,for reference only

1.编写报告总体框架与报告最终整理 2.取款模块 3.编写测试计划、测试分析报告并写入程序代码 -1. Preparation of the report and the report of the overall framework of the final finishing 2. Teller module 3. Preparation of test plans, test analysis report and write program code

opnet 关于网络建模的程序，C语言支持。-on network modeling procedures, C language support.

在电子技术中，频率是最基本的参数之一，又与许多电参量的测量方案、测量结果都有十分密切的关系，因此频率的测量就显得更为重要。测量频率的方法有多种,其中电子计数器测量频率具有精度高、使用方便、测量迅速，以及便于实现测量过程自动化等优点，是频率测量的重要手段之一。在本次毕业设计中我们选择使用单片机来制作数字频率计，并在实际制作中采用了直接测频法。利用延时产生的时基门控信号来控制闸门，通过在单位时间内计数器记录下的脉冲个数计算出输入信号的频率，最终送入LCD中显示。这样制作出来的频率计不仅可以满足设计题目的参数要求，而且具有了单片机的稳定性和成熟性，且控制能力强，是一种低成本，高可靠的设计方案。-In electronic technology, the frequency is one of the most basic parameters, but also with a number of electrical parameters of the measurement program, the measurement results have a very close relationship between the frequency of measurement, therefore it is even more important. Measurement of the frequency of a number of means, electronic measurement of the frequency counter with high precision, easy to use, rapid measurement, and measurement is easy to realize the advantages of process automation is an important means of measuring the frequency of one. Graduates in this design we have chosen to make use of single-chip digital frequency meter, and used in the actual production of a direct

PKE（被动无钥门禁系统，汽车车门控制）整个系统遥控部分原理图。-PKE (passive-keyless-entry system, car door control) remote part of the whole system schematic.

ATMEL基于ARM的芯片选型指南ATMEL基于ARM的芯片选型指南-ARM-based chip ATMEL Selection Guide ATMEL chips based on ARM Selection Guide