变更：tedt>LED 变为 实验一

homework1/src/main.c

@@ -0,0 +1,20 @@
+#include <REG52.H>
+
+sbit LED   = P0 ^ 0;
+sbit ADDR0 = P1 ^ 0;
+sbit ADDR1 = P1 ^ 1;
+sbit ADDR2 = P1 ^ 2;
+sbit ADDR3 = P1 ^ 3;
+sbit ENLED = P1 ^ 4;
+
+void main()
+{
+    ENLED = 0;
+    ADDR3 = 1;
+    ADDR2 = 1;
+    ADDR1 = 1;
+    ADDR0 = 0;
+    LED   = 0;
+    while (1) {
+    }
+}