Edit in JSFiddle

Result
JavaScript
HTML
CSS

// declare a module
var myApp = this.angular.module('myApp', []);

// declare a controller
myApp.controller('TimerCtrl', function ($scope) {
    $scope.timer = null;
    $scope.msg = 'Timer is not running.';
    $scope.count = 0;
    
    //Run this function when the 'Start Timer' button has been clicked.
    $scope.startTimer = function(){
        //Kill the timer to prevent a second function to be attach to the timer variable
        $scope.stopTimer();
        $scope.msg = 'Timer is running';
        //Create a Timer that will execute the function $scope.update() every 100 milliseconds
        $scope.timer = setInterval($scope.update, 100);
    }
    
    //Run this function when the 'Stop and Reset Timer' button has been clicked.
    $scope.stopTimer = function(){
        clearInterval($scope.timer);
        $scope.count = 0;
        $scope.msg = 'Timer is not running.';
    }
    
    $scope.update = function(){
        //Update the variable count
        $scope.count++;
        //Force the view to refresh and update accordingly
        $scope.$apply();
    }
});

<!-- stitch this with the module declare in Javascript -->
<body ng-app="myApp">
    <div ng-controller="TimerCtrl">
        <table class="timeTable">
            <tr>
                <td>
                    Status: {{msg}}<br>
                    Function 'update' has been executed': {{count}} 'times'
                </td>
            </tr>
            <tr>
                <td>
                    <button ng-click="startTimer()">Start Timer</button>
                    <button ng-click="stopTimer()">Stop and Reset Timer</button>
                </td>
            </tr>
        </table>
    </div>
</body>

.timeTable td{
    text-align: center;
}

.timeTable td, .timeTable tr, .timeTable{
    width: 100%;
}