关于情报保护的电子讲义,韩国名校的讲义英文的,关于密码学等等很多资料
On Information Protection Electronic Materials, South Korea prestigious lectures in English on Cryptography and so a lot of information (2007-12-13, MultiPlatform, 4965KB, 下载2次)
数字式计时器一般都由震荡器，分频器，译码器及显示几部分组成。其中震荡器和分频器组成标准秒信号发生器，接成各种不同进制的计数器组成计时系统，译码器，显示器组成显示系统，另外一些组合电路组成校时调节系统。
digital timer usually are oscillator, dividers, decoder and display several parts. Which oscillator and divider standard component signal generator seconds, then into a variety of counter-band component metering systems, decoder, display composition display system, some other combination of circuit composed of school-conditioning system. (2005-01-12, MultiPlatform, 116KB, 下载95次)