This is a tutorial of using PADS software to build your own PCB.

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Create a new part

0. We will use PADS Logic to create a new part.
1. select your part will create at which library.
   …It is suggested to create your own library. After create library, remember click the Manage Lib list and add your library to the list.
2. select parts.
3. Click New... to create new parts.

You will see the left top become NEW_PART. Then click Edit Graphics to start draw the logic symbol.

Just click yes.

changing the Gird

Tools -> Options...

You need to change the Design grid and display grid the unit is mil (100mil = 0.1 inch).
Design grid is the step size unit, it mean minimum move 10 mil 1 time.
display grid is the length between the background dot.

create logic symbol

show the tools bar by clicking the Decal editing toolbar.

create the symbol

use the CAE decal wizard to create the symbol.

changing the number to get the shape you want. The preview is shown at left.

Pin number

After you confirm it, you can start set the pin number. You can just click the pin in orderly.

You can use change Pin number to correct the pin index.

Pin name

You can use change Pin name to name all the pin.

Reshape the symbol

using the modify 2D Line the change the symbol.

After name all the pin and correct the shape, I get this logic symbol at final.

saving logic symbol

File -> Return to Part

just yes.

Save As..

The Name of Part is the name of this new part. The CAE Decal 1 is the name of the logic symbol.
One part can have more than one logic symbol, so we can see we are naming the Gate A.
Normally I will just give them the same name.

Here it will pop out a warning message. Part has no PCB Decal assigned.
we can just ignore it, the next tutorial will draw the PCB decal.