History
Astro Computing Services (ACS) in San Diego, founded by Neil Michelsen in 1973, published a computer-generated astrological ephemeris in 1976, The American Ephemeris.
When personal computers generally became available, astrologers and astrology hobbyists were able to purchase them and use astrological or astronomical calculation software or make such programs themselves. Astrologer and computer programmer Michael Erlewine was involved early in making astrological software for microcomputers available to the general public in the late 1970s. In 1978, Erlewine founded Matrix Software, and in 1980 he published a book with all the algorithms and data required for owners of microcomputers to make their own complete astrological programs. At first, astrology software was opposed by American astrologers who did not approve of computers in their field. However, acceptance grew as it became clear how more efficient and profitable such software could be.
A few hundred fixed-purpose astrology computers were made, one of which was used by Nancy Reagan's astrologer beginning in about 1981.
Read more about this topic: Astrology Software
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