Sumo Jaya's Mobile Blog MARI BERBUAT BAIK Keywords: adalah , blog , dan , membahas , sumojaya.mywapblog.com , teknologi , trik sumojaya.mywapblog.com History Of Mechanical Calculators - Part I Covers the history of modern day adding devices from 1885 with the "Marconi Box" with rubber bands and wires to electrical motor driven machines of the 1940's. Discusses styles of computing throughout this period. www.xnumber.com/xnumber/mechanical1.htm South Western Electricity Historical Society Index Page for SWEHS Keywords: avon , bristol , cornwall , devon , electricity , exeter , historical , power stations www.swehs.co.uk/ Site Listings Sumo Jaya's Mobile Blog MARI BERBUAT BAIK Keywords: adalah , blog , dan , membahas , sumojaya.mywapblog.com , teknologi , trik sumojaya.mywapblog.com History Of Mechanical Calculators - Part I Covers the history of modern day adding devices from 1885 with the "Marconi Box" with rubber bands and wires to electrical motor driven machines of the 1940's. www.xnumber.com/xnumber/mechanical1.htm South Western Electricity Historical Society Index Page for SWEHS Keywords: avon , bristol , cornwall , devon , electricity , exeter , historical , power stations www.swehs.co.uk/ The Engines Of Our Ingenuity: Main Page The Engines of Our Ingenuity, radio program Keywords: history www.uh.edu/engines/ Add Url or Add Site to Submit Site to the History Directory |