diff --git a/homework2/.eide/eide.json b/homework2/.eide/eide.json
index b1191f3..d6da857 100644
--- a/homework2/.eide/eide.json
+++ b/homework2/.eide/eide.json
@@ -19,7 +19,8 @@
   "targets": {
     "Debug": {
       "excludeList": [
-        "src/test1.c"
+        "src/test1.c",
+        "src/test2.c"
       ],
       "toolchain": "Keil_C51",
       "compileConfig": {
diff --git a/homework2/src/test3.c b/homework2/src/test3.c
new file mode 100644
index 0000000..d06d4a0
--- /dev/null
+++ b/homework2/src/test3.c
@@ -0,0 +1,32 @@
+// test3.c
+// 同时让多个LED灯闪烁
+#include <reg52.h>
+#include "homework2.h"
+void main()
+{
+    ENLED = 0;
+    ADDR3 = 1;
+    ADDR2 = 1;
+    ADDR1 = 1;
+    ADDR0 = 0;
+    while (1) {
+        D1 = 0;
+        D2 = 0;
+        D3 = 0;
+        D4 = 0;
+        D5 = 0;
+        D6 = 0;
+        D7 = 0;
+        D8 = 0;
+        Delay(100000);
+        D1 = 1;
+        D2 = 1;
+        D3 = 1;
+        D4 = 1;
+        D5 = 1;
+        D6 = 1;
+        D7 = 1;
+        D8 = 1;
+        Delay(100000);
+    }
+}
\ No newline at end of file