Basic Terminologies

Grid                 : Graphical aid for placing the component.

Snap               : The minimum distance that the cursor can jump from one position to another position with an object tagged to it.

Angular Snap: The minimum angle that the cursor can jump with an object tagged to it.

Entry Point    : The point at which the electrical connection given or taken to/from the component pin.

Pad                 : A circular/ oval /rectangular or line shaped seat for component pin with necassary diameter and hole(optional) created  with  copper.

Units               : 1"    = 1000mils

                     1"    = 25.4mm

                     0.1" = 2.54mm=1000mils

From View choose Units à inches , Set Grid as 0.1" and Snap as 0.05".

Naming Conventions

Packages in EDWinXP are named in the format Package type No: of pins in the package/horizontal pitch between the pad in mils. Eg: DIP14/300 where DIP is the package type, 14 is the no: of pins in the package and 300 is the horizontal pitch between the pads in mils.

To create a library part first you need to create the symbol and package of the part. Part constitutes of Symbol and package.