描述
段码显示器驱动电路，两只CD4513的数据输入端A～D共用可编程序控制
器的4个输入端，其中A为最低位，D为最高位。LE端是锁存使能输入端，在LE信号的上升沿将数据输入端的BCD数据锁存在片内的寄存器中，并将该数译码后显示出来，LE为低电平时，显示器的数不受数据输入信号的影响。显然，N位显示器所占用的输出点P=4+N。图9中Y004及YOO5分别接通时，输出的数据分别送到上下两片CD4513中。
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