Simple ConsoleWorker
I think for the given task, the code is fine. 

If you want to do some architecting, here are some thoughts


I'd say the class does two things, timing and updating console
I'd create a worker class that would do the timer stuff
Inject (using dependency injection) an interface that can output stuff
Create an interface that defines "outputting stuff"
Create a console version of that interface
Feed it to the concrete one


It's just refactoring so that you can use the same stuff to write output to different places such as disk, web service etc..