详细讨论了TM卡的特点及其读写电路和软件程序，并简要介绍了一种TM卡收费电表的设计。
The characteristics of a TM card and its reading-writing circuit and software program are discussed in detail, and a design of TM card watt-hour meter is introduced in brief.
分析了非接触式IC卡芯片耦台电源及读写距离的计算方法，并简要介绍了相关低压电路的设计技术。
Method of calculation for the non-contact IC card chip coupling power supply and the read and write distance were analyzed, and the relative low-voltage circuit designs were introduced.
PC与DSP的数据交换采用高速静态RAM，并设计总线仲裁电路及相应的握手信号，以保证PC与DSP双方对RAM的正确读写。
PC and DSP exchange data using high speed static RAM and bus arbitration circuit and corresponding handshake signal is designed to ensure the correct reading and writing RAM.
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