 　　8路输入通道：在界面上用指示灯来显示8个输入的状态：有外加信号输入时状态为“1”，指示灯亮；无外加信号输入时状态为“0”，指示灯灭。

 　　24路输出通道：用开关按钮自行设置24个输出：“1”为高电平，“0”为低电平。输出通道具有二级锁存功能，即当计算机因故断电时，若板卡的供电电源照常供电，开关量的输出状态不会改变，直到计算机恢复供电后重新设置开关量的输出状态为止。

-8 input channels: to display the 8 input state indicating lamp on the interface: the external input signal state is "1", the indicating lamp is bright　no external input signal state is "0", indicating lamp.



　24路输出通道：用开关按钮自行设置24个输出：“1”为高电平，“0”为低电平。输出通道具有二级锁存功能，即当计算机因故断电时，若板卡的供电电源照常供电，开关量的输出状态不会改变，直到计算机恢复供电后重新设置开关量的输出状态为止。



· 24 output channels: set the 24 output switch button: "1" high, "0" as a low level. Output channel has two latch function, namely when the computer for power, if the power supply board as power supply, output state will not switch quantity changes, the output state until the computer after the power recovery reset switch.