<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.4">
<drawing>
<board>
<plain>
<wire x1="2.54" y1="1.27" x2="70.79" y2="1.27" width="0" layer="20"/>
<wire x1="70.79" y1="1.27" x2="70.79" y2="31.74" width="0" layer="20"/>
<wire x1="70.79" y1="31.74" x2="2.54" y2="31.74" width="0" layer="20"/>
<wire x1="2.54" y1="31.74" x2="2.54" y2="1.27" width="0" layer="20"/>
</plain>
<libraries>
<library name="pinhead">
<description>&lt;b&gt;Pin Header Connectors&lt;/b&gt;&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="2X25">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
<package name="1X02">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
</packages>
</library>
<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>
<library name="con-lsta">
<description>&lt;b&gt;Female Headers etc.&lt;/b&gt;&lt;p&gt;
Naming:&lt;p&gt;
FE = female&lt;p&gt;
# contacts - # rows&lt;p&gt;
W = angled&lt;p&gt;
&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
<packages>
<package name="FE25-2">
<description>&lt;b&gt;FEMALE HEADER&lt;/b&gt;</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="JP1" library="pinhead" package="2X25" value="50 pin male header"/>
<element name="IC1" library="74xx-us" package="DIL14" value="74LS280N"/>
<element name="SV1" library="con-lsta" package="FE25-2" value="50 pin female Header">
<attribute name="OC_NEWARK" value="unknown"/>
<attribute name="MPN" value=""/>
<attribute name="MF" value=""/>
<attribute name="OC_FARNELL" value="unknown"/>
</element>
<element name="JP2" library="pinhead" package="1X02" value="Power supply"/>
</elements>
<signals>
<signal name="A2">
<contactref element="JP1" pad="2"/>
<contactref element="IC1" pad="8"/>
<contactref element="SV1" pad="2"/>
</signal>
<signal name="A4">
<contactref element="JP1" pad="4"/>
<contactref element="IC1" pad="9"/>
<contactref element="SV1" pad="4"/>
</signal>
<signal name="A30">
<contactref element="JP1" pad="30"/>
<contactref element="SV1" pad="30"/>
</signal>
<signal name="A6">
<contactref element="JP1" pad="6"/>
<contactref element="IC1" pad="10"/>
<contactref element="SV1" pad="6"/>
</signal>
<signal name="A8">
<contactref element="JP1" pad="8"/>
<contactref element="IC1" pad="11"/>
<contactref element="SV1" pad="8"/>
</signal>
<signal name="A10">
<contactref element="JP1" pad="10"/>
<contactref element="IC1" pad="12"/>
<contactref element="SV1" pad="10"/>
</signal>
<signal name="A12">
<contactref element="JP1" pad="12"/>
<contactref element="IC1" pad="13"/>
<contactref element="SV1" pad="12"/>
</signal>
<signal name="A14">
<contactref element="JP1" pad="14"/>
<contactref element="IC1" pad="1"/>
<contactref element="SV1" pad="14"/>
</signal>
<signal name="A16">
<contactref element="JP1" pad="16"/>
<contactref element="IC1" pad="2"/>
<contactref element="SV1" pad="16"/>
</signal>
<signal name="A18">
<contactref element="JP1" pad="18"/>
<contactref element="SV1" pad="18"/>
<contactref element="IC1" pad="6"/>
</signal>
<signal name="A20">
<contactref element="JP1" pad="20"/>
<contactref element="SV1" pad="20"/>
</signal>
<signal name="A22">
<contactref element="JP1" pad="22"/>
<contactref element="SV1" pad="22"/>
</signal>
<signal name="A24">
<contactref element="JP1" pad="24"/>
<contactref element="SV1" pad="24"/>
</signal>
<signal name="A26">
<contactref element="JP1" pad="26"/>
<contactref element="SV1" pad="26"/>
</signal>
<signal name="A28">
<contactref element="JP1" pad="28"/>
<contactref element="SV1" pad="28"/>
</signal>
<signal name="A32">
<contactref element="JP1" pad="32"/>
<contactref element="SV1" pad="32"/>
</signal>
<signal name="A34">
<contactref element="JP1" pad="34"/>
<contactref element="SV1" pad="34"/>
</signal>
<signal name="A36">
<contactref element="JP1" pad="36"/>
<contactref element="SV1" pad="36"/>
</signal>
<signal name="A38">
<contactref element="JP1" pad="38"/>
<contactref element="SV1" pad="38"/>
</signal>
<signal name="A40">
<contactref element="JP1" pad="40"/>
<contactref element="SV1" pad="40"/>
</signal>
<signal name="A44">
<contactref element="JP1" pad="44"/>
<contactref element="SV1" pad="44"/>
</signal>
<signal name="A46">
<contactref element="JP1" pad="46"/>
<contactref element="SV1" pad="46"/>
</signal>
<signal name="A48">
<contactref element="JP1" pad="48"/>
<contactref element="SV1" pad="48"/>
</signal>
<signal name="A50">
<contactref element="JP1" pad="50"/>
<contactref element="SV1" pad="50"/>
</signal>
<signal name="+5V">
<contactref element="IC1" pad="14"/>
<contactref element="JP2" pad="2"/>
</signal>
<signal name="GND">
<contactref element="IC1" pad="4"/>
<contactref element="IC1" pad="7"/>
<contactref element="JP2" pad="1"/>
</signal>
<signal name="A3">
<contactref element="JP1" pad="3"/>
<contactref element="SV1" pad="3"/>
</signal>
<signal name="A5">
<contactref element="JP1" pad="5"/>
<contactref element="SV1" pad="5"/>
</signal>
<signal name="A7">
<contactref element="JP1" pad="7"/>
<contactref element="SV1" pad="7"/>
</signal>
<signal name="A9">
<contactref element="JP1" pad="9"/>
<contactref element="SV1" pad="9"/>
</signal>
<signal name="A11">
<contactref element="JP1" pad="11"/>
<contactref element="SV1" pad="11"/>
</signal>
<signal name="A13">
<contactref element="JP1" pad="13"/>
<contactref element="SV1" pad="13"/>
</signal>
<signal name="A17">
<contactref element="JP1" pad="17"/>
<contactref element="SV1" pad="17"/>
</signal>
<signal name="A19">
<contactref element="JP1" pad="19"/>
<contactref element="SV1" pad="19"/>
</signal>
<signal name="A21">
<contactref element="JP1" pad="21"/>
<contactref element="SV1" pad="21"/>
</signal>
<signal name="A23">
<contactref element="JP1" pad="23"/>
<contactref element="SV1" pad="23"/>
</signal>
<signal name="A25">
<contactref element="JP1" pad="25"/>
<contactref element="SV1" pad="25"/>
</signal>
<signal name="A27">
<contactref element="JP1" pad="27"/>
<contactref element="SV1" pad="27"/>
</signal>
<signal name="A29">
<contactref element="JP1" pad="29"/>
<contactref element="SV1" pad="29"/>
</signal>
<signal name="A31">
<contactref element="JP1" pad="31"/>
<contactref element="SV1" pad="31"/>
</signal>
<signal name="A33">
<contactref element="JP1" pad="33"/>
<contactref element="SV1" pad="33"/>
</signal>
<signal name="A35">
<contactref element="JP1" pad="35"/>
<contactref element="SV1" pad="35"/>
</signal>
<signal name="A37">
<contactref element="JP1" pad="37"/>
<contactref element="SV1" pad="37"/>
</signal>
<signal name="A39">
<contactref element="JP1" pad="39"/>
<contactref element="SV1" pad="39"/>
</signal>
<signal name="A41">
<contactref element="JP1" pad="41"/>
<contactref element="SV1" pad="41"/>
</signal>
<signal name="A43">
<contactref element="JP1" pad="43"/>
<contactref element="SV1" pad="43"/>
</signal>
<signal name="A45">
<contactref element="JP1" pad="45"/>
<contactref element="SV1" pad="45"/>
</signal>
<signal name="A47">
<contactref element="JP1" pad="47"/>
<contactref element="SV1" pad="47"/>
</signal>
<signal name="A15">
<contactref element="JP1" pad="15"/>
<contactref element="SV1" pad="15"/>
</signal>
<signal name="A1">
<contactref element="JP1" pad="1"/>
<contactref element="SV1" pad="1"/>
</signal>
<signal name="A42">
<contactref element="SV1" pad="42"/>
<contactref element="JP1" pad="42"/>
</signal>
<signal name="A49">
<contactref element="SV1" pad="49"/>
<contactref element="JP1" pad="49"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
