In the hair of a PC machine with 51 single

某公司安装了电子门，要设计门禁系统： 公司的雇员可以凭借密码、胸卡或指纹进入公司 计算机根据雇员的验证方式对其身份进行验证 管理员在监控室可以通过按钮直接开启电子门 访客可以按门铃请求进入，由管理员为其放行 管理员可以为新职员设置密码 -A company to install an electronic gate, to design access control systems: the company" s employees can rely on passwords, badges or finger into the company computer, authentication of the employee to verify their identity can be an administrator in the control room directly through the button to open electronic gates that visitors can rang the doorbell of the request to enter an administrator can be released by the administrator of its staff to set a password for the new

我第一次从事这些活动,我不太明白您们说说的源代码是什么,上载课件可以吗?-The first time I engaged in these activities, I do not quite understand you talk about what is the source code, courseware can upload it?

调和分析，数学与信息技术的交叉，对信号分析等领域的研究员有意义-Harmonic analysis, mathematics and information technology, cross-signal analysis of a researcher in areas such as meaningful

网上搜集的IDE控制的c51程序，可以研究一下。-online collection of IDE control of the decoder procedure could look into.

USB接口芯片 FT245的ARM驱动源程序-USB interface of the ARM chip FT245 driver source

机械产品控制器，控制了变频器，并且接入了很多开关量信号-mechanical products controller, control of the converter, and a lot of access off Signal

这是msp430 进入低功耗的例程，请查收，接下来还有-This is a low-power MSP430 into the routine, please check, then there

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

R63400 C51 test program

基于51单片机的公交车报站系统程序 基于51单片机的公交车报站系统程序-Based on 51 MCU bus stop announcement system program