3 résultats
réf. B273804-2Linz Ars Electronica 2000. 48pp. Text illus. Sm. oblong 4to. Wraps. Guide and schedule. Pen annotations. Linz (Ars Electronica), 2000. paperback books
1982réf. 157141N.p.: Yamaha Corporation 1982. Seventeen vintage photographs of Yamaha "Natural Sound" home audio equipment circa 1981-1982. Seventeen promotional product photographs issued by Yamaha Corporation showcasing six receivers five amplifiers four tuners a turntable and a cassette tape deck all with Yamaha's period design featuring Yamaha's signature "Natural Sound" with silver and black brushed stainless steel l.e.d. displays and then state of the art circuit boards. All of the products found here were manufactured by Yamaha between 1980 and 1983 with 1981 and 1982 being the only years all seventeen products were being manufactured likely their entire line of home audio equipment offered. Yamaha first used the marketing term "Natural Sound" to describe the realistic well-balanced sound of their NS-20 speakers in 1967 and still use the term today. Full list of all models available upon request. 10 x 8 inches. Near Fine. Yamaha Corporation unknown books
1974réf. 236291974. JRW Electronics' board level modification of Atari Pong to create Handicap Pong arcade conversion engineering archive 1974 documenting JRW Electronics' board level modification of Atari Pong during the first years of the commercial video game industry. The name "Handicap pong" originated with the intention to allow for gameplay to be adjusted so players of different skill levels preferences or abilities could compete on the same machine without replacing the original cabinet. The archive records the conversion of an existing Pong cabinet into Handicap Pong through revised controls altered circuitry and adjustable game parameters. The annotated sheets suggest professional technical use by a JRW technician installer or arcade service operator Archive of four technical documents Mountain View and Sunnyvale California 1974. 1 Logic Diagram. Pong Handicap. JRW Electronics Inc. drawing no. JRW 005 dated 8-6-74. Large engineering schematic titled Logic Diagram Pong Handicap identifying integrated circuit IC locations electrical signal paths wiring harness connections and required circuit board modifications. 2 Handicap Pong. JRW Electronics Inc. Sunnyvale California. Stapled three-page instruction packet titled in manuscript "Handicap Pong" with component-side diagrams showing the populated face of the printed circuit board and numbered steps for lifting IC pins from the board cutting printed copper traces replacing electronic components and adding jumper wires. 3 Handicap Pong. JRW Electronics Inc. Mountain View California. Stapled four-page instruction packet with manuscript check marks wire color assignments IC pin modifications underside wiring connections and a printed adjustment sheet for paddle position paddle centering and ball speed. 4 Single lined notebook sheet with hand-drawn wiring diagrams connector layouts and pin assignments. The documents record the engineering practice of the discrete logic era before microprocessor-based arcade games made software the primary means of altering game behavior. The conversion required physical intervention in the circuit: lifted IC pins cut printed traces substituted resistors and capacitors rerouted harnesses and recalibrated analog controls. JRW's kit belongs to the first commercial aftermarket for coin operated video games in which operators modified existing cabinets rather than purchasing complete replacements. Folding moderate toning edge wear old tape to the large schematic and manuscript annotations throughout. Overall good condition. A compact technical archive of early arcade hardware modification and pre microprocessor video game engineering. unknown books