本程序用来计算matlab中两点坐标之间的距离，坐标必须是经纬度，并表明所要计算的单位...

（1） 有一个主持人控制开关和8路抢答按扭，当主持人允许抢答时才能进行抢答操作，并用一个数码管显示抢答选手的号码，同时其他选手不能再抢答。 （2）电路上要加个蜂鸣器的电路，当有选手抢答时蜂鸣器响一下。 （3）要有倒计时功能，开始抢答时开始倒20秒计时，用两个数码管显示，当有人抢答时停止倒计时。 2.2拓展部分 用按键可设置倒计时的时间，范围在5秒到30秒之间。-(1) has a host switch and 8-way control button to answer in, when the moderator allowed to be carried out to answer in time to answer in operation, and use an LED display to answer in the number of players, while other players can no longer answer in his place. (2) the circuit, we should add a buzzer circuit, when there are players when the buzzer rang to answer in about. (3) to have the countdown feature to begin to answer in 20 seconds when you start down time, using two digital tube display, when someone stops to answer in the countdown. 2.2 The expansion of part of the buttons can be set with the countdown time, the range of 5 seconds to 30 seconds.

设置关联文件的易源码-To set associated with the file easy to source ..............

数据采集器程序，可以试试看数据采集器程序，可以试试看-Data acquisition program

这是一个学生成绩管理系统，其中“I”表示插入，“L”表示浏览，“Q”表示查询， “E”表示退出，“D”表示删除，“M”表示修改,"c"表示统计各分数段人数,"p"表示打印. 本程序实现了： （1）单独运行以上各功能,即在进入主菜单以后，点一功能键后关闭，再进入主菜单 点别的功能键。如运行"cjgl"文件后,在出现的主界面中点“I”，可插入数据，插入完 以后，关闭；在出现的主界面中点“M”，可修改数据，修改完以后关闭，用同样的方法 可运行其它的功能。 （2）连续运行部分的功能。 应将文件"score.txt"放在相应的路径下.如在本程序中,需将该文件放在"c:masmscore.txt"下. 注:该文件的路径可从汇编源文件的"fname db "c:masmscore.txt"""中查找.-masm

软中断处理程序，arm异常中断测试程序，可以很好的理解软中断的处理过程。-Soft interrupt processing, arm abnormal interruption of the test procedures, can be a very good understanding of soft-interrupted process.

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

键盘控制相应的LED不同状态,直观易懂好学.PIC就从这里开始.-keyboard to control the corresponding LED different states, is easy to understand learning. PIC from here.

modem的一个源程序，要做这个可以download,有一定参考价值！-modem a source, can download this to be done, there is a certain reference value!

共轭梯度法，以及几种常见的的优化方法程序-Conjugate gradient method

汇编写的非压缩BCD码减法。实现两个非压缩BCD码在机器语言中的减法。但未实现输入-compilation write uncompressed BCD subtraction. Achieving two non-compressed BCD in the machine language of subtraction. But to achieve the importation