Received signal from unit for switchinginput modes, the keyboard controller selects and processes information input from the keyboard push button keys or from the touch units.
In the thesis, I choose P89V51RD2 microprocessor to be in charge of the intelligent control algorithms, data acquisition, inverter control signal output, switchinginput and output.
本文采用P 89 V 51rd2单片机作为系统的微处理器，负责进行智能控制算法运算，数据采集，变频器控制信号输出，开关量输入输出等。
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Figure 19, shows the input field after switching back to data input mode.