diff --git a/num_key/README.md b/num_key/README.md
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--- a/num_key/README.md
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-模拟数字键盘
-----
-###一、起由
-	（1）目前虚拟键盘需要输入小数点，需要切换键盘；
-	（2）不同设备上存在兼容性。
-	
-	
-###二、用法
-	（1）new KeyBoard(inputElement);
-	（2）Demo如下
-		<!DOCTYPE html>
-		<html>
-		<head>
-			<meta charset="utf-8" />
-			<title>模拟数字键盘</title>
-			<meta name="viewport" content="width=device-width, initial-scale=1.0, 
-			maximum-scale=1.0, minimum-scale=1.0, minimal-ui" />
-		</head>
-		<body>
-			<div>
-				<input id="text1" style="height:28px;width:98%;outline:none;
-				border:1px solid #1AB6FF;padding-left:3px;"/>
-				<br />
-				<br />
-				<input id="text2" style="height:28px;width:98%;
-				outline:none;border:1px solid #1AB6FF;padding-left:3px;"/>
-			</div>
-			<script type="text/javascript" src="keyboard.js"></script>
-			<script type="text/javascript">
-			(function(){
-				var input1 = document.getElementById('text1');
-				var input2 = document.getElementById('text2');
-			
-				input1.onclick = function(){
-					new KeyBoard(input1);
-				};
-			
-				input2.onclick = function(){
-					new KeyBoard(input2);
-				};
-			
-			})();
-			</script>
-		</body>
-		</html>
