Edit in JSFiddle

var app = angular.module('myApp', []);   
app.controller('departmentController', function ($scope) { 
$scope.controllerName = "departmentController"; 
$scope.message = "This controller contains data related to department"; 
});   
app.controller('employeeController', function ($scope) { 
$scope.controllerName = "employeeController"; 
$scope.message = "This controller contains data related to employee"; 
}); 
<body ng-app="myApp"> 
<h1>Multiple Controllers Example</h1> 
<div ng-controller="departmentController"> Controller Name: {{controllerName}}<br/> Message: {{message}}
<br> 
<br> 
<input type="text" ng-model="message"/> 
</div> 
<br>
<div ng-controller="employeeController"> Controller Name: {{controllerName}}
<br> 
Message: {{message}}
<br> <br>
<input type="text" ng-model="message"/> 
</div>
</body>