CAD software, also referred to as Computer Aided Design software and in the past as computer aided drafting software, refers to software programs that assist engineers and designers in a wide variety of industries to design and manufacture physical products ranging from buildings, bridges, roads, aircraft, ships and cars to digital cameras, mobile phones, TVs, clothes and of course computers! CAD software is often referred to as CAD CAM software ('CAM' is the acronym for Computer Aided Machining). While he could never have foreseen today's CAD software, no CAD software history would be complete unless it started with the mathematician Euclid of Alexandria, who, in his 350 B.C. treatise on mathematics "The Elements" expounded many of the postulates and axioms that are the foundations of the Euclidian geometry upon which today's CAD software systems are built. It was more than 2,300 years after Euclid that the first true CAD software, a very innovative system (although of course primitive compared to today's CAD software) called "Sketchpad"[http://www.cadazz.com/cad-software-Sketchpad.htm] was developed by Ivan Sutherland as part of his PhD thesis at [MIT] in the early 1960s. Sketchpad was especially innovative CAD software because the designer interacted with the computer graphically by using a light pen to draw on the computer's monitor. It is a tribute to Ivan Sutherland's ingenuity that even in 2004, when operations which took hours on 1960s computer technology can be executed in less than a millionth of a second and touch-sensitive TFT combination display/input devices are readily available, there is no leading CAD software that has yet incorporated such directness into its user interface. In 1987 [John Ousterhout] devised [Tcl] as an interface to ease research he was then doing with [CAD] software for IC and PCB design. [TV] Apart from computer graphics related CAD (like buildings, objects, manufacturing drawings, etc) CAD is important in electrical engineering and other sciences, like when designing electronical circuits, and especially also: chips. Just before the above time, when I was a student interested in major chip design (I already had the schematics of the yamaho DX7 synth at home...), and got into a section at Delft University which advertised the desire to be into those types of subjects, designing chips was a big thing in combination with computers: the chip layout (the lines and planes etched by chemicals) , the chip function (by high level design tools, up to 'silicon compilers') chip simulations (from electronics level to course logical operation), and the database based storage of huge amounts of information to go with all this. Hello everyone This is a Translation service website which can supply machine translation! [http://www.paper-translation.com 翻译社] [http://www.law-translation.com 翻译社] [http://www.book-translation.com 翻译社] [http://www.commerce-translation.com 翻译社] [http://www.acmetranslation.com 翻译社]