diff --git a/Template/keyscan.md b/Template/keyscan.md
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+# 按键扫描模板
+
+## 修改使用
+
+```c
+if(key == 0)
+{
+    Delay(10);
+    if(key ==0 )
+    {
+        if(num >= 996)
+            num=0;
+        else
+            num++;
+        while(!key);
+    }
+}
+
+```
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