User Guide

Table Of Contents
NANDsymbol7400(Europeanrepresentation)
The two input pins are called I0 and I1 and are defined as having direc
-
tion In,swaplevel 1, visible Pin andfunction None.
The output pin is called O and is defined with direction Out, swaplevel
0,visible Pin,andfunction Dot.
Now define the supply gate with the name PWRN, and the following
properties:
Powergate
The two pins are called GND and VCC. They are defined with direction
Pwr,swaplevel 0,function None,andvisible Pad.
Nowcreatethe 7400 deviceintheDeviceEditor:
Specify the package with PACKAGE (which must already be present in
thelibrary)andusePREFIXtospecifythenameprefixas IC.
Use the ADD command to place the 7400 symbol four times, with ad
-
dlevel being set to Next and swaplevel to 1. Then label the gates as A, B,
CandDwiththeNAMEcommand.
191
ComponentDesignExplainedthroughExamples