檢視比较器的原始碼

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|<center>'''比较器'''<br><img
src="https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fgss0.baidu.com%2F9fo3dSag_xI4khGko9WTAnF6hhy%2Fzhidao%2Fpic%2Fitem%2Ff9198618367adab41856954f8ad4b31c8701e43c.jpg&refer=http%3A%2F%2Fgss0.baidu.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=auto?sec=1670895355&t=aa3872a5972f43c1346babbc65523103 " width="280"></center><small>  圖片來自百度</small> 
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对两个或多个[[数据项]]进行比较，以确定它们是否相等，或确定它们之间的大小关系及排列顺序称为比较。 能够实现这种比较功能的电路或装置称为比较器。 比较器是将一个[[模拟电压]]信号与一个[[基准电压]]相比较的电路。比较器的两路输入为[[模拟信号]]，输出则为[[二进制]]信号0或1，当[[输入电压]]的差值增大或减小且正负符号不变时，其输出保持恒定。