超级时钟的程序，值得收藏，很经典的，用C语言编写，运行可靠！-Super-clock program, worthy of collection, very classic, with the C language, and reliable operation!

EM78P468的4时钟C语音程序，利用TIMER1为中断记数，高频采用PLL方式-EM78P468 4 clock C voice procedure, and use TIMER1 interrupt count, high-frequency mode with PLL

二维空间中的多边形逼近。确定三个顶点a，b，c并且其函数值按从小到大排列。将二维空间中的多边形三个顶点的函数值按从小到大顺序排列， 判断三点或三点函数值的距离是否小于给定阈值.若小于阈值停止循环，得最优解x0=a-Two-dimensional space polygon approximation. Determine the three vertices a, b, c and its function value in ascending order. The three-dimensio

e Handbook Entry Communication concepts: Fourier transforms, random signals, Transmitter and receiver filters, matched filter, Nyquist criterion. Digital Modulation schemes: M-ary ASK, QPSK, FSK, CPM, spectral analysis of modulated signals, ML and

基于stc89c51的钟表控制系统，C语言编写(Watch system based on STC89C51)