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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Devices with this interface will be common in client computer devices using flash memory, including notebook computers and some tablets.

FORBES: A New Age of Digital Storage Interfaces