Combine detailed introducing the single electrical engineering control system that a machine constitute, and pass to expand 8255 design for completing keyboard with realistic electric circuits.
并详细介绍了单片机组成的电机控制系统，以及通过扩展8255芯片完成键盘和现实电路的设计。
2
The system consists of the AC input stage, single phase PFC, main inverter, output low-pass filter, auxiliary power supply, and load current sharing circuit, etc.