When a product's role is not needed, the futility of the product becomes apparent. Two-Face resolves to make use of the "idle moments" of a product. Usage time for a calculator is usually short, and when the user is not working, a calculator is left on the desk like an object without function. This project turns a calculator into a functoning digital clock when the calculator function is not needed. Simply fold the display panel and flip the Two-Face calculator to prop it up - the user now has a desktop digital clock.