Computer aided drafting and design
Computer aided drafting and designComputer Aided Drafting and Design
CADD stands for Computer Aided Drafting and Design. By using the computer for the functions normally utilized by hand, a greater amount of efficiency can be attained. By drawing lines with a computer on a screen, corrections can be made without erasing the entire product. CADD is a lot like a word processor, letting people draw whatever they choose, print it, and if corrections are needed, only a small amount of time is needed to correct it. CADD has the speed of a technical sketch in the accuracy of a normal drawing.
CADD programs can utilize different methods in the way they draw their pictures. Some use co-ordinates, which is the standard method, and some might use inches or centimeters. The standard method of co-ordinates gives a product which is compatible with other systems. One co-ordinate point might represent 1/10 of a millimeter in actual space. Then 1 millimeter is 10 co-ordinate points.
CADD systems were developed along with the computer. They were developed very slowly. They went from being very large, clumsy, elaborate machines which needed lots of human intervention to one program on a floppy disk. When the power of computers increased, so did the possibilities of CADD.
Images on CADD systems are drawn with the aid of a keyboard, mouse, or tracking ball. One selects the starting point of a line, the ending point, and the line is drawn. A scale at the bottom of the screen tells how long the line...
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