The forth chapter introduces the mainboard's hardware design of tax controlled receiver. The mainboard contains common facility, such as CPU, LCD drive, FLASH, serial interface , and so on.
第四章详细介绍了税控收款机主板的硬件设计，主板包括CPU、LCD液晶驱动、FLASH、串口等常用的外设。
The forth chapter introduces the mainboard's hardware design of tax controlled receiver. The mainboard contains common facility, such as CPU, LCD drive, FLASH, serial interface , and so on.
第四章详细介绍了税控收款机主板的硬件设计，主板包括CPU、LCD液晶驱动、FLASH、串口等常用的外设。
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