Calculator

The Calculator on the Macintosh systems started out as a desk accessory and developed into a separate application program as of Mac OS X.

The Calculator in the Classic Mac OS
Under the classic Mac OS, the Calculator was a desk accessory. It remained this way through to Mac OS 9.2.2.

It was very simplistic -- some would say too simplistic. It contained a result area and standard calculator push-buttons which could be activated by clicking the on-screen buttons or by using the physical keyboard buttons.