The next lessons are for the people with good electronics experience and that have to found a software to make, easily and swiftly, the schematic and the Pcb layout of a circuit. Circad is a very simple program to use, but, first time, isn't easy to use it because the demo doesn't
explains the right use of Circad. I'll don't explain all the functions the program have, but I'll use the most important features.
Circad is provided in an evalutation version that doesn't have some function included (e.g. the autorouter in the Windows version) or the same functions are actived only for the trial demo time (e.g. the Gerber file output in the 3.52 Dos version). To use the software completly is necessary to buy the commercial version. This site is not in business with the Holophase Inc., that is the Circad software house, and own all the Copyright, but it is inteded only to divulgate Circad into the electronics community.
The lessons are for the Version 3.52, for Dos and Windows 3.1/95, and for the Windows 98/NT version. The differences between the versions are small (e.g. the undo function in the Windows version) and minimal. The Version 4.09 of Circad, actually downloadable at the Holophase Inc. site works well on Windows 98.
The fastest way to use Circad is to use the keyboard shortcuts, then when you'll see an icon like it means that you'll must press the Z key and the I key. This is equivalent to select the "Zoom" menu and to select the "In" option, but is more fast and it isn't necessary to move the mouse. All the shortcuts are always maded by two key. You'll learn fast to use the most common shortcuts. Attention at the shortcuts used in the Circad versions different from the 3.52 because some key combination are been modified!
During a lesson, when you'll see a line like "Pattern" = 4067
it means that into the record "Pattern" of a form you must write the value 4067.
All the lesson have a "wire" that joins it togheter from the Lesson 1. I suggest to you to print the lessons or to save them.