Executes or Calling Programs with timer via Batch Line

After I search how to execute some programs with timer via batch line on google, finally I found it and here's the code I make it simple:

ping -n 60 127.0.0.1>nul
calc.exe

You can make it as batch file. From the code above, the number "60" means that 60 seconds. It needs 60 seconds to execute calculator after you click the batch file. You can change it into 120 for 2 minutes, and so on.