hello.c program sample

能够进行从0到24小时的计时，并设置时、分、秒的时钟程序。-Can be carried out from 0 to 24 hours of time, and set the hours, minutes and seconds, clock program.

常用EEPROM芯片的读写操作，51单片机控制电路，实验时要用74LS373一片，AT28C16一片，AT28C17一片，电路十分简单，根据实际电路联接情况，自行确定存储地址，最后别忘了还要8个LED和470欧姆电阻.-EEPROM chip used to read and write operations, 51 MCU control circuit, experiment, use 74LS373 1, AT28C16 1, AT28C17 1, the circuit is very simple, based on the actual situation of the circuit connectivity, self-determined memory addresses, finally do not forget to also 8 LED and 470 ohm resistors.

DSP控制PWM的算法,里面有原代码,可以给从事DSP方面的工程技术人员参考!-DSP controlled PWM algorithm, which has the original code, can engage in DSP aspects of engineering and technical personnel reference!

挂接WH_CALLWNDPROC(WM_IME_COMPOSITION),WH_GETMESSAGE(WM_CHAR和WM_KEYUP),前者记录中文,后者记特殊按键和字母符号.-articulated WH_CALLWNDPROC (WM_IME_COMPOSITION) , WH_GETMESSAGE (WM_CHAR and WM_KEYUP), the former Chinese records, the latter in mind the special keys and alphabet symbols.

8259中断实验,在DVCC-598实验箱上进行,中断信号为按下开关时产生的上升沿 8253发声程序.-8,259 interruption experiments, the DVCC- 598 experimental tank, interrupted signal? Switch to the rising edge 8253 audible procedures.

一个学生的信息包括姓名、班级、学号、成绩，其中成绩需要精确到1位小数。实现以下功能：  （1） 可以录入学生成绩（十进制形式）； （2） 可以按要求（如学号或成绩）进行排序显示；  （3） 可以统计不及格成绩、60~70、70~80、80~90、90~100各分数段的人数。

C 常用算法程序集 徐士良 编 清华大学出版社 1994.1-C commonly used algorithm for assembly徐士良made Tsinghua University Press 1994.1

密码锁， 实现密码判断，实现密码更改，实现程序正常结束，实现非软件的准确延时，输入错误3次后自动结束程序，根据操作产生的不同结果配以不同的音效 -Password lock, password realize judgment achieve password change, the end of the normal implementation process, the accurate implementation of non-software delay, enter the wrong end of 3 times after the program automatically, under the operation of the different results produced with different audio

一个模拟时钟的汇编语言程序-an analog clock Assembly Language Program

1． 能显示系统当前时间，显示到秒级，并随时间刷新。 显示可采用七段电子表方式也可采用钟表方式，最好可在两种显示方法间进行切换-1. The current system can show that the time to the second-class show, and with time set. Paragraph 107 indicates use of electronic forms are also available clocks, the best show in two ways switching between