基于UML的食堂就餐卡系统的分析与设计

fingerprint recogotion

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

停车场C语言课程设计报告，包含停车场要求及完整的实验报告，有运行结果-Car park C language curriculum design report, including the parking lot requirements and complete the experimental reports, the results

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

房产售楼CRM系统是以房地产销售业务为主线，集成了客户关系管理的先进售楼理念，全面管理从销售前期准备、销售业务管理、后期收款、服务及各种综合统计分析在内的全部销售业务过程。-property sales CRM system based on real estate sales business main line, integrated customer relationship management of advanced sales concepts and the overall management of preparations from sales, sales management, the late receivables, services and various comprehensive statistical analysis of all the sales process.

22款增值业务产品策划方案 22款增值业务产品策划方案-22 products, value-added business planning program 22 products, value-added business planning program

四川大学唐宁九的计算机课件，PPT，很有用，请初学者学习。-Sichuan University, Downing nine computer courseware, PPT, very useful, please beginners to learn.

一个医院的软件需求分析，看起来很不错，对于那写说软件工程难学的人来说是一个材料！-a hospital software needs analysis, looked good, said it was difficult to study software engineering who is a material!

完整的智能小车解决方案, 非常详细,带有详细的硬件电路图和程序.-Smart car complete solution, very detailed, with detailed hardware schematics and procedures.

工资管理系统代码。利用面向对象的方法以及C++的编程思想来完成系统的设计。-Salary Management System code. The use of object-oriented methods and C++ Programming ideas to complete the system design.