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  1. Computing power rolled back 4 decades

    Back in 1966 the Apollo guidance computer first flew. A few years later it found the moon, and landed the lunar module.   The computer's performance was comparable to the first generation of home computers from the late 1970s, such as the Apple II, TRS-80, and Commodore PE It clocked at 2MHz, had 2k of ram (15 bits wide), and 36k of rom (16 bit)   Of course NASA also had workstations, server/mainframes, and super computers A workstation might have had 128k ram, 64k rom, and 256k on disk A server 512k ram, and megabytes on disk   Now we can buy an Arduino for €20 with 2k ram, 32k flash, clock 12MHz It's comparable to the landing computer   The pyboard is a work station with 128k ram, 512k flash The esp32 a server with 520k ram 1M flash And the rasberry pi for €40 is a super computer