基于c的一个销售管理系统

中断服务程序的关键是：1.保护进入中断时的状态，并在退出中断之前恢复进入时的状态。2.必须在中断程序中设定是否允许中断重入，即设置EX0位。 本例中使用了INT0中断，一般中断程序进入时应保护PSW，ACC以及中断程序使用但非其专用的寄存器。本例的INT0程序保护了PSW，ACC，2等三个寄存器并且在退出前恢复了这三个寄存器。另外中断程序中涉及到关键数据的设置时应关中断，即设置时不允许重入。本例中没有涉及这种情况。 实验开始时K8应在H（高电平）端，要产生中断时先拨向L（低电平）端再拨回H端。 -Interrupt service s key is: 1. the protection enters when the interrupt condition, and when the withdrawal interrupt before regains enters the condition. 2. must in the interrupt routine establish whether to permit the interrupt re-entry, namely establishes the EX0 position. in this example has used the INT0 interrupt, generally the interrupt routine enters when should protect PSW, ACC as well as the interrupt routine use but non-its special-purpose register. This example INT0 program protection PSW, ACC,2 and so on three registers, and restored these three registers before the withdrawal. Moreover in the interrupt routine involves to when the essential data establishment should close the interrupt, namely when establishment does

多线程演示程序，一个很好的例子-multithreading demo program, a good example

accessing dbase files

阅读软件 办公室偷偷看的好东东 增加透明度选择!!! 可以置顶显示-Office software secretly reading a good look at the Eastern increase transparency choice! ! ! Can set-top show

xml和数据库操作 xml和数据库操作-xml and xml database operations and database operations

一般还包含最后生成的可执行文件 读者可以使用 Visual Basic 将它们分别打开，分析其中的源代码 和各个控件的属性设置。 -Generally also includes the final executable file generated by the reader can use Visual Basic to open them separately, analysis of the source code and various properties of the control settings.

通过建立双进程实现的进程保护功能，用VB实现。-VB to achieve dual-process protection

DSP编程常用函数 double uniform(double a,double b,long int* seed) double gauss(double mean,double sigma,long int *seed) double exponent(double beta,long int *seed) double laplace(double beta,long int* seed) double rayleigh(double sigma,long int *seed) double weibull(double a,double b,long int*seed) int bn(double p,long int*seed) int bin(int n,double p,long int*seed) int poisson(double lambda,long int *seed) void dft(double x[],double y[],double a[],double b[],int n,int sign) void fft(double x[],double y[],int n,int sign)-DSP programming functions commonly used double uniform (a double, double b, long int* seed) double Gauss (double mean, double sigma, long int* seed) double exponent (double beta, long int* seed) double Laplace (double beta,* long int seed) double Rayleigh (double sigma, long int* seed) double Weibull (a double, double b, long int* seed) int bn (double p, long int* seed) int bin (int n, p double, seed long int*) int poisson (double lambda, long int* seed) void dft index (doubl

用C语言编写的日历，任意输入某年，可以良好的格式输出本年度的日历。-C language prepared by the calendar, indiscriminate importation of a particular year can be a good format for the output of the calendar year.

键盘输入不定长（最大长度受限制）二进制数，以回车键结束，输入数据要求有容错功能，然后将其转换成十六进制数显示输出。-Keyboard input variable length (maximum length) binary number to the end of the enter key, the input data required fault tolerance, and then converted to hexadecimal number display.