用一片CPLD芯片就完成了全部的译码、时序控制、显示控制等功能，这样CPU和LCD之间就可能直接用一个CPLD芯片连接了，无需再加入其它的接口器件。
Realizing all needed function such as encoding, sequence control, display control and so on with only one CPLD chip, it can be used to connect CPU with LCD without any other devices.
SIM读卡器和手机数据接口是基于PC机串行通信口，利用一片74hc14芯片实现接口功能。
SIM reads the card and the handset data interface is based on the PC machine serial port, USES a piece of 74hc14 chip to realize the interface function.
SIM读卡器和手机数据接口是基于PC机串行通信口，利用一片74hc14芯片实现接口功能。
SIM reads the card and the handset data interface is based on the PC machine serial port, USES a piece of 74hc14 chip to realize the interface function.
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