Summarization about calculator circuits based on 4 bit embeded system is given, include block diagram and work principle, the instruction system, the structure of MCU core and the I/O.

对基于4位嵌入式微控制器的计算器电路进行了综述，包括功能框图与工作原理、指令系统、内核硬件结构以及系统与外界接口等。

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This test platform can accomplish the on line test to the circuits and components of some kind of special calculator central control circuit board.

该测试平台主要完成对某专用计算器中央控制电路板的电路、器件的在线测试。

youdao

This test platform can accomplish the on line test to the circuits and components of some kind of special calculator central control circuit board.

该测试平台主要完成对某专用计算器中央控制电路板的电路、器件的在线测试。

youdao