But Windows and Menus were there, the Mouse got introduced to the masses, and the classic Calculator desk accessory survived virtually unchanged all the way to Mac OS 9! The GUI had arrived.Īt the VMM a 512k traces the early evolution of the Mac OS with boot floppies for Systems 1-5. The original Mac System Software did not yet have a Shut Down command, just Eject Disk and the power switch on the back. System Software ran off one floppy, and a second external drive (if you were lucky) held your program or data files – swapping floppies was a way of life for Mac pioneers.

Case design was identical in the 128k and 512k Mac models, with a 9″ black & white screen, small keyboard, separate numeric keypad, and a 3.5″ 400k floppy drive the 512k “Fat Mac” added badly needed RAM.