<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.6.0">
<drawing>
<board>
<plain>
<wire x1="-1.27" y1="0" x2="17.78" y2="0" width="0" layer="20"/>
<wire x1="17.78" y1="0" x2="17.78" y2="38.1" width="0" layer="20"/>
<wire x1="17.78" y1="38.1" x2="-1.27" y2="38.1" width="0" layer="20"/>
<wire x1="-1.27" y1="38.1" x2="-1.27" y2="0" width="0" layer="20"/>
</plain>
<libraries>
<library name="74xx-us">
<description>&lt;b&gt;TTL Devices, 74xx Series with US Symbols&lt;/b&gt;&lt;p&gt;
Based on the following sources:
&lt;ul&gt;
&lt;li&gt;Texas Instruments &lt;i&gt;TTL Data Book&lt;/i&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;Volume 1, 1996.
&lt;li&gt;TTL Data Book, Volume 2 , 1993
&lt;li&gt;National Seminconductor Databook 1990, ALS/LS Logic
&lt;li&gt;ttl 74er digital data dictionary, ECA Electronic + Acustic GmbH, ISBN 3-88109-032-0
&lt;li&gt;http://icmaster.com/ViewCompare.asp
&lt;/ul&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="DIL14">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="IC1" library="74xx-us" package="DIL14" value="74121N"/>
<element name="IC2" library="74xx-us" package="DIL14" value="74LS122N"/>
</elements>
<signals>
<signal name="GND">
<contactref element="IC1" pad="7"/>
<contactref element="IC2" pad="7"/>
</signal>
<signal name="VCC">
<contactref element="IC1" pad="14"/>
<contactref element="IC2" pad="14"/>
<contactref element="IC2" pad="5"/>
</signal>
<signal name="A1">
<contactref element="IC1" pad="3"/>
<contactref element="IC2" pad="1"/>
</signal>
<signal name="RC">
<contactref element="IC1" pad="11"/>
<contactref element="IC2" pad="13"/>
</signal>
<signal name="C">
<contactref element="IC1" pad="10"/>
<contactref element="IC2" pad="11"/>
</signal>
<signal name="R">
<contactref element="IC1" pad="9"/>
<contactref element="IC2" pad="9"/>
</signal>
<signal name="B">
<contactref element="IC1" pad="5"/>
<contactref element="IC2" pad="3"/>
<contactref element="IC2" pad="4"/>
</signal>
<signal name="A2">
<contactref element="IC1" pad="4"/>
<contactref element="IC2" pad="2"/>
</signal>
<signal name="Q">
<contactref element="IC1" pad="6"/>
<contactref element="IC2" pad="8"/>
</signal>
<signal name="!Q">
<contactref element="IC1" pad="1"/>
<contactref element="IC2" pad="6"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
