clock_design.c为模拟时钟设计源程序，利用数字显示从系统中获得的日期和时间！ -clock_design.c designed to simulate the clock source, using figures obtained from the system date and time!

基于matlab的DTMF数字拨号音合成，通过的简单的时域连接，用于进一步分析合成效果。DTMF2是分析部分，用于显示时域波形，频谱图和语谱图。-Based on the synthesis matlab DTMF digit dialing tone, and connected by a simple time domain, for further analysis synthesis results. DTMF2 the analysis section, time-domain wav