Heathkit H8 and Heath H89 computers

Top picture: Heathkit H8, 8bit computer
Bottom picture: Heath H89 computer
The H89 is an 8bit computer using a Zilog Z80 CPU processor and up to 64KB of RAM with a built-in 40 track single sided floppy drive.

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Tennis for Two was a game developed in 1958 on an analog computer, which simulates a game of tennis or ping pong on an oscilloscope. Created by American physicist William Higinbotham, it is important in the history of video games as one of the first electronic games to use a graphical display.