我取出了我在第一次谈论这个主题时写作例子的表达式计算器，之后修改了一点代码，增加实时性，如字节码编译。

I took the ExpressionEvaluator I wrote as example for the first post about this topic, and then I edited a bit the code adding just in time AS Bytecode compilation .

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专门设计的磁鼓控制器不采用通常的寻址方式，而用按字模码搜索读鼓的方式取出汉字字模。

The specially designed magnetic drum controller allows the Chinese fonts on the drum to be retrieved not by drum address but by character codes match.

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位同步时钟信号的提取是通信系统中的关键部分，应用数字锁相环可以准确地从输入码流中提取出位同步信号。

Bit synchronous clock recover circuit is the key part of the communication system, it can exactly recover the synchronous signal from input data stream.

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