![]() ![]() ![]() Gerber Scientific introduces RS-274-D as a machine-based format for vector photoplotters.ĬAD comes into existence. Boards were typically double-sided, with only a small percentage of multilayer boards, usually no more than four layers. Pads were about 70 mils or greater, and traces and spacing were 25 mils. An experienced designer could lay out and tape a board at the rate of about two hours for each equivalent 14-pin IC on the board. A precision camera then produced the 1:1 negative manufacturing film. The Institute for Printed Circuits is founded in Chicago.īoards were designed using 4:1, red-and-blue line vellum method for hand-taping components and tracks. US authorities rule that all electronic circuits for airborne instruments were to be printed. Paul Eisler (right), "father of the PCB," is born in Vienna, Austria.īritish engineer Arthur Berry patents a print-and-etch method. German inventor Albert Hanson describes a flat foil conductor laminated to an insulating board, using multiple layers. The concept lays the groundwork for the printed circuit. Photosensitive coatings perfected, enabling use of photoengraving and setting the stage for future copper etching processes. Then a Deal Was Forged.Ī decade in, was IPC-2581 worth the effort? Regarding the Use of Core Vias in a PCB Designīuried and blind vias solve most HDI routing studies.Ī new study reveals emerging applications for attaching very-fine-pitch parts using low-temp methods.ĭata Exchange Was Dead. From proper grounding to material selection, common best practices for optimal RF results.Ĭritical Success Factors for Implementing and Sustaining Quality Management Systemsĭoes sustained ISO 9001 and Lean Six Sigma deliver success? ![]()
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