Forgotten Consoles

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Microvision; the first handheld console to use interchangeable cartridges, released all the way back in 1979.

This badboy had a 16x16 monochrome screen, the processor was on the game cart rather than in the console, and carried a whopping 64 bytes of RAM.

It was discontinued in 1981 after just two years on the market; according to the former head of Nintendo R&D1, it inspired the Gameboy.