Altair 8800 computerComputer from MITS that was developed by Henry Edward Roberts and introduced on December 19, 1974. It was later published on the front cover of Popular Electronics in 1975 making it almost instantly a huge success. The Altair 8800 included an Intel 8080 processor, "1024 word" memory boards with 256 bytes of memory (expandable to 64 K) and was available as a kit for $439 or assembled for $621 and had several additional add-ons such as a memory board and interface boards. By August 1975 over 5,000 Altair 8800 personal computers were sold and started the personal computer revolution. The picture is an example of what the Altair 8800 computer looked like. This photograph was taken by Euthman at the Smithsonian institute.

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Also see: Computer history, Personal computer