模拟计算机符号

Question

我认为所有这些都可以通过实现circuitikz。以下是两个示例。顺便说一句，\tikzstyle已弃用。

\documentclass{article}
\usepackage{amsmath}
\usepackage[american,siunitx]{circuitikz}
\begin{document}
\begin{circuitikz}
 \draw (0,0) to[amp,t=$\boldsymbol{K}$] ++(3,0); 
 \ctikzset{amplifiers/minus={$k_1$},amplifiers/plus={$k_2$}}
 \draw (0,-1.5) -- ++(1,0) node[op amp, anchor=-](sum){};
 \tikzset{cop amp/.style 2 args={op amp,
 /utils/exec=\ctikzset{amplifiers/minus={},amplifiers/plus={}},
 append after command={%
 pic{rect={#1}{#2}}
 }},
 pics/rect/.style 2 args={code={\let\mytikzlastnode\tikzlastnode
 \draw[thick,fill=white] (\tikzlastnode.bin up|-\tikzlastnode.north) 
 -- ++({-1.1*max(width("#1"),width("#2"))-8pt},0) |- (\tikzlastnode.bin up|-\tikzlastnode.south)
 -- cycle;
 \path (\mytikzlastnode.bin up) node[left=0pt,font=\boldmath] {#1}
  (\mytikzlastnode.bin down) node[left=0pt,font=\boldmath] {#2};
 }}}
 \draw (1,-4)  node[cop amp={$k_1$}{$k_2$}, anchor=-](sum){};
\end{circuitikz}
\end{document}

让我试着解释一下

\tikzset{cop amp/.style 2 args={op amp,
 /utils/exec=\ctikzset{amplifiers/minus={},amplifiers/plus={}},
 append after command={%
 pic{rect={#1}{#2}}
 }},
 pics/rect/.style 2 args={code={\let\mytikzlastnode\tikzlastnode
 \draw[thick,fill=white] (\tikzlastnode.bin up|-\tikzlastnode.north) 
 -- ++({-1.1*max(width("#1"),width("#2"))-8pt},0) |- (\tikzlastnode.bin up|-\tikzlastnode.south)
 -- cycle;
 \path (\mytikzlastnode.bin up) node[left=0pt,font=\boldmath] {#1}
  (\mytikzlastnode.bin down) node[left=0pt,font=\boldmath] {#2};
 }}}

确实如此。它定义了一个修改后的op amp节点。它使用此节点，因此是op amp键。然后它删除了和+。（有人可能会说使用并不总是最佳的。我同意 Henri 的观点。然而，Ti-/utils/exec=\ctikzset{amplifiers/minus={},amplifiers/plus={}}/utils/exec钾Z 甚至在内部使用它，即可以在中找到它tikz.code.tex。我认为在这里没问题。）主要成分是密钥append after command，它发出添加矩形的图片。矩形附加到节点，节点的名称存储在中\tikzlastnode。由于我们要添加其他节点，因此它会存储在上\mytikzlastnode。通过测量参数的大小，我们可以确保矩形足够大。也可以fit在这里使用。

以下是编辑爱德华多·阿尔维斯·达席尔瓦，多谢！

编辑：关于如何使用，例如，制作您提供的图像：

\documentclass[border = 5pt]{standalone}
\usepackage[RPvoltages]{circuitikz}
\usepackage{calc}
\usepackage{tikz}
\tikzset{cop amp/.style 2 args={op amp,
    /utils/exec=\ctikzset{amplifiers/minus={},amplifiers/plus={}},
    append after command={%
        pic{rect={#1}{#2}}
}},
pics/rect/.style 2 args={code={\let\mytikzlastnode\tikzlastnode
        \draw[thick,fill=white] (\tikzlastnode.bin up|-\tikzlastnode.north) 
        -- ++({-1.1*max(width("#1"),width("#2"))-8pt},0) |- 
(\tikzlastnode.bin up|-\tikzlastnode.south)
        -- cycle;
        \path (\mytikzlastnode.bin up) node[left=0pt,font=\boldmath] {#1}
        (\mytikzlastnode.bin down) node[left=0pt,font=\boldmath] {#2};
}}}
\begin{document}
\begin{circuitikz} [american voltages]
    \node[draw,minimum size,fill=white] (-1) {-1};
    \draw (-1.east) to[short,-] ++(1,0)
    node[draw, circle,anchor=west] (g) {g};
    \draw (g.east) to[short] ++(0.5,0) node[cop amp={}{}, anchor=-](int1){};
    \draw (int1.out) to[short] ++(1,0) coordinate (aux) to[short] ++(1,0) node[cop amp={}{}, anchor=west] (int2) {};
    \draw (aux) to[short,*-] ++(0,-2) coordinate (aux2);
    \draw[-] (aux2) -- ++(-2,0) node[draw,circle,anchor=east] (dm) {$d/m$};
    \draw[-] (dm) --++(-1.5,0) coordinate (aux2);
    \draw[-] (aux2) |- (int1.+);
    \draw (aux) node[above] () {$-\dot{y}$};
    \draw (int2.out) to[short] ++(0.5,0) node[above] () {$y$};
    \draw (int2.out) to[short, *-] ++(0,-3.5) to[short] ++(-1,0) node[buffer,xscale=-1,anchor=in] (buffer) {};
    \draw (buffer.out) to[short] ++(-0.5,0) node[above] () {$-y$};
    \draw (buffer.out) to[short] ++(-1,0) node[draw,circle,anchor=east] (cm) {$c/m$};
    \draw (cm.west) to[short] ++(-3.5,0) coordinate (aux) to[short] (aux |- int1.west)
    to[short] (int1.west);
\end{circuitikz}
\end{document}

Answer 1