3D model of IBM System 23 Datamaster. The model is developed without texture. The original 3d model of IBM System 23 Datamaster come from Virtual Museum of Computing which belongs to UCLM. The System 23 Datamaster was announced by IBM in July 1981, only one month before the IBM PC. The Datamaster was an all-in-one computer with text-mode CRT display, keyboard, processor, memory, and two 8-inch floppy disk drives all contained in one cabinet. The processor was an 8-bit Intel 8085, with bank switching logic to manage 256 kB of memory.