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Quartus II的实验指导。对初学QUQARTUS II 的业内人士适用-Quartus II experimental guidance. For beginner QUQARTUS II applies to the industry

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人事管理系统是企业用来管理员工信息、工资、考勤和工作考核信息的一套信息化系统。本系统符合操作简便、界面友好、灵活、实用、安全的要求出发，完成人事管理的全过程，包括“系统”、“职能设置”、“基本信息”、“工资管理”、“工作评价管理” 以及“考勤管理”等功能模块-The human resource management system is used to manage employee information, salary , attendance and work assessment. This system includes several sections, such as, system, function setting, basic information, salary management, work assessment management, attendance management and so on. the system are easy operation, friendly interface, agile, economic and safe.

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

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详细地说明了磁传感器在开发中的两种方案与电路原理。-Detailed description of the magnetic sensors in the development of two programs with the circuit principle.

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本文主要介绍了利用RS232和CAN总线协议转换组建CAN控制网络

本系统主要以沈阳黄页业务管理为基本要求，主要功能包括：1. 业务员及业务经理权限的设定。2. 业务员部门的划分。3. 业务员在线录入信息。4. 企业公告版。5. 站内短信留言。-mainly to the system in Shenyang Yellow Pages business management as the basic requirements, main functions include : 1. Clerks and business manager of the authority set. 2. The clerk division. 3. Information online entry clerk. 4. Business bulletin boards. 5. Station SMS messages.