batch computing

Ted Nelson demonstrates Xanadu Space, his software for representing hypertext in three-dimensional space with linked, referenced content fragments.

Earliest known footage of Ivan Sutherland's MIT PhD work, Sketchpad, the first computer graphics system, with commentary by Alan Kay. It shows light-pen drawing with constraints in a short clip.

Alan Kay demonstrates GRaIL, a graphical input language system from around 1968 in which hand-drawn strokes become boxes, connections and dataflow-style programs.

Robotic Liberation by PWP is a music video demo performed entirely by an unexpanded Commodore VIC-20 and a 1541 disk drive, using only a few kilobytes of RAM and a 16 KB disk. It uses demoscene effects to tell a story.

The original Amiga Boing Ball demo, written at the Winter CES in January 1984 to show off the Amiga's hardware, with a bouncing, spinning checkered ball running while the system multitasked. It became the Amiga's unofficial emblem.

A 1971 DEC LAB-8/e (PDP-8/e) minicomputer plays music by inducing noise into a nearby AM radio. The software is Richard Wilson's 1975 Music Compiler running under OS/8.

A one-minute demo at the Computer History Museum's IBM 1401 restoration lab, where a program makes the machine's radio-frequency interference play tunes on an AM radio.

Matthias Wandel shows his wooden machine that adds binary numbers using marbles. It demonstrates computation with purely mechanical logic.

A 2008 CES demo of the original Microsoft Surface, a smart table with multi-touch interaction. It shows touch manipulation of photos and objects on a tabletop display.