本实验仪提供了6 位8段码LED显示电路，学生只要按地址输出相应数据，就可以实现对显示器的控制。显示共有6位，用动态方式显示。8位段码、6位位码是由两片74LS374输出。位码经MC1413或ULN2003倒相驱动后，选择相应显示位。

本实验仪中 8位段码输出地址为0X004H，位码输出地址为0X002H。此处X是由KEY/LED CS 决定，参见地址译码。

做键盘和LED实验时，需将KEY/LED CS 接到相应的地址译码上。以便用相应的地址来访问。例如，将KEY/LED CS接到CS0上，则段码地址为08004H，位码地址为08002H。

-This experimental device provides six LED display circuit 8 code, students will address output by the corresponding data can be achieved on the control display. Shows a total of 6, with the dynamically displayed. 8-bit code segment, 6-bit code output by two 74LS374. Bit code by the MC1413 or ULN2003 inverter drive, select the appropriate display position. The experimental device in 8-bit code segment output address 0X004H, bit code output address 0X002H. Where X is the KEY/LED CS decision, see the address decoding. Do keyboard and LED experiment, take the KEY/LED CS on receiving the appropriate address decoding. In order to use the appropriate address to access. For example, KEY/LED CS received CS0 on the section of code address is 08004H, bit code address is 08002H.