求翻译：功能块图类似于与非门、或门的框图来表示逻辑运算关系，方框的左侧为逻辑运算的输入变量，右侧为输出变量，输入、输出端的小圆圈表示“非”运算，方框用“导线”连在一起，信号自左向右。是什么意思？

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正在翻译，请等待...

The function block chart is similar to the NAND gate, the or gate diagram expressed the logic operation relations, square left side for the logic operation input variable, right flank is the output variable, the input, the out-port small circle expressed “must” the operation, the square uses “the wi

Function block diagram is similar to the gate, or gate diagram to represent a logical operation, input variables for logical operations on the left side of the box on the right for the output variable, input and output side of the small circles represent "not" operation, the box with "wire" linked t