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Donald E. Lancaster is a prolific author, inventor, and microcomputer pioneer best known for his magazine columns. He is also known for his "TV Typewriter" dumb terminal project, his book on technical entrepreneurship The Incredible Secret Money Machine, and his work on and advocacy of early print-on-demand technology. Lancaster's print-on-demand technique, with which he self-published several books, employed hand-tuned PostScript code sent to a laser printer through the game port of an Apple II rather than, as was common at the time, a Macintosh running PageMaker. He helped design and manufacture the Apple I keyboard. He held a radio amateur license (K3BYG) for a short time. He sells electronic surplus on eBay and participates regularly in the eBay seller's forums. Current activities include studying a spectacular series of local prehistoric hanging canals and developing low distortion "Magic Sinewave" synthesis techniques. He is also a caver and a volunteer fireman.