Although basic printed circuit boards can be made with a copper clad board, marking pen, and acid bath, modern high density PC boards require automated software tools for accurate and reliable design and production. Software systems range in price from free to very expensive commercial systems. The one that is best for you will depend on the complexity of your board and whether you need manufacturing support. Allegro Design allows the schematic and board design to be synchronized, thus allowing for rapid design changes. The system allows for physical constraints, like not allowing certain component types on certain physical parts of the board, and electrical constraints and design rules. It allows for design re-use through a library of pre-designed board sub-sections Managing and reducing the design lifecycle is a major challenge to getting products on the market in a timely, predictable manner. PCB designers need an environment that captures their design intent, provides rapid decision feedback, and then intelligently and automatically performs design tasks adhering to their design intent.

The Allegro PCB Design (http://www.enventureonline.com/) provides capabilities in a graphical environment to help designers create intelligent abstractions of critical interfaces and capture interconnect design intent. Making a leap forward and establishing a new PCB design paradigm, Allegro PCB Design Planning technology offers intelligent planning and automation where no automation was previously available. Allegro PCB Designer quickly takes simple or complex designs from concept to production in a constraint-driven design system. Its scalable based plus options model allows designers to cost-effectively match the technological and methodological needs of small to large companies and projects.

PCB is a tool for the layout of printed circuit boards. PCB can produce industry standard RS-274X and Excellon NC-Drill format output for submission to board manufacturers.

PCB layout tools are made as the industry stander in which it is use to making design for the particular machine, building, pre structure of any things. It is very helpful for getting the idea of that product looks before it actual made.