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Some History of Matrix Software By Michael Erlewine

Some History of Matrix Software By Michael Erlewine

Some History of Matrix Software By Michael Erlewine

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efore long I was doing extendedseries <strong>of</strong> trig calculations on a lowlypocket calculator. It beat the earlierpaper trig tables, but it still took along time. I can remembercalculating early Local Space charts(azimuth and altitude) that wouldtake me the whole day to do thenumbers for a single chart.was in for trouble. Then he ran hisfinger down a long list <strong>of</strong>pr<strong>of</strong>essions, leaned over, looked mein the eye and said “The pr<strong>of</strong>ession<strong>of</strong> „astrologer‟ is listed right abovethat <strong>of</strong> „migrant worker‟.” Loandenied.Well, I needed that calculator and Iwent back to the bank two moretimes until they finally gave me theloan to buy my first programmablecalculator, one <strong>of</strong> many I wouldlearn before I was done. Ipurchased an even better calculatorsometime later when a almost-newcar my parents had given us was hitby a passing motorist (while it wasparked) and totaled. With theinsurance money I was able to buya much-worse car and a largerprogrammable calculator. From littleacorns big oaks do grow. Thatwrecked car was the seed fromwhich came <strong>Matrix</strong> S<strong>of</strong>tware.Photo: HP-67 ProgrammableWhen programmable calculatorscame along I was Johnny-on-the-Spot in line to get one. I can stillremember buying my first HPprogrammable at Ulrich‟s Bookstoreat 549 E. University in Ann Arbor,just down from where mygrandmother used to live. It was amarvel to me. And the calculatorssoon got more complicated andmore expensive. Of course I had nomoney and the next one I wantedcost a steep $500. I decided to go tothe bank and ask for a loan. Well,that was fun.Sitting there with the creditmanager, he asked me what I didfor a living. Of course, honest Abehere told him I was an astrologer.His eyebrow arched and I knew IPhoto: HP-97 Programmable<strong>By</strong> this time I was writing all kinds <strong>of</strong>astrology programs onprogrammable calculators anddelving into some areas astrologershad never been before. One <strong>of</strong> themwas published by no less thanHewlett-Packard as part <strong>of</strong> a bookon astronomical and astrologicalalgorithms. In 1975 I published myfirst book, a long-range heliocentricephemeris, “The Sun is Shining”

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