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Grail Diary as seen in "Indiana Jones and the Last Crusade (1989)"
Gary Gygax, Richard Garriott, and Bill Gates
Advanced Dungeons & Dragons handbook 1st edition, 1978
Steve Jobs and Steve Wozniak building the first Apple computers.
John Lennon, and Paul McCartney
The Radioshack TRS-80 Color Computer aka Coco released in 1980 and would plug into your television.
Commodore 64 released in 1982 and is the highest-selling single computer model of all time.
The infamous Floppy Disk
(5 1/4" is the one in the middle)
An Atari 800XL and Apple II
A 'vintage' PC Setup, complete with Monitor, Keyboard, Mouse, and other crude input devices.
A Holodeck, like this one from Star Trek, is a room that is capable of simulation hundreds if not thousands of different environments and situations.