<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.6.0">
<drawing>
<board>
<plain>
<text>Unit0</text>
<text>Unit2</text>
<text>Unit4</text>
<text>Unit6</text>
<text>Unit1</text>
<text>Unit3</text>
<text>Unit5</text>
<text>Unit7</text>
</plain>
<libraries>
<library name="dec-con">
<packages>
<package name="SINGLE">
<description>Single-Height DEC board</description>
</package>
<package name="EDGE-CON2">
<description>Single-Height DEC edge connector</description>
</package>
<package name="DEC40PINV">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="con-lstb">
<packages>
<package name="MA04-2">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
<package name="MA07-2">
<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="74xx-us">
<packages>
<package name="DIL14">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="rcl">
<packages>
<package name="0207/10">
<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;
type 0207, grid 10 mm</description>
</package>
<package name="C050-025X075">
<description>&lt;b&gt;CAPACITOR&lt;/b&gt;&lt;p&gt;
grid 5 mm, outline 2.5 x 7.5 mm</description>
</package>
</packages>
</library>
</libraries>
<attributes>
</attributes>
<variantdefs>
</variantdefs>
<elements>
<element name="IC1" library="74xx-us" package="DIL14" value="74H04N"/>
<element name="R1" library="rcl" package="0207/10" value="470"/>
<element name="C1" library="rcl" package="C050-025X075" value=""/>
<element name="R2" library="rcl" package="0207/10" value="470"/>
<element name="R3" library="rcl" package="0207/10" value="470"/>
<element name="R4" library="rcl" package="0207/10" value="470"/>
<element name="U$1" library="dec-con" package="SINGLE" value="OUTLINE-SINGLE"/>
<element name="U$2" library="dec-con" package="EDGE-CON2" value=""/>
<element name="SV1" library="con-lstb" package="MA04-2" value="">
<attribute name="OC_NEWARK" value="unknown"/>
<attribute name="MPN" value=""/>
<attribute name="MF" value=""/>
<attribute name="OC_FARNELL" value="unknown"/>
</element>
<element name="SV3" library="con-lstb" package="MA04-2" value="">
<attribute name="OC_NEWARK" value="unknown"/>
<attribute name="MPN" value=""/>
<attribute name="MF" value=""/>
<attribute name="OC_FARNELL" value="unknown"/>
</element>
<element name="SV2" library="dec-con" package="DEC40PINV" value=""/>
<element name="SV5" library="con-lstb" package="MA07-2" value="">
<attribute name="OC_NEWARK" value="unknown"/>
<attribute name="MPN" value=""/>
<attribute name="MF" value=""/>
<attribute name="OC_FARNELL" value="unknown"/>
</element>
<element name="R5" library="rcl" package="0207/10" value="1K"/>
<element name="R6" library="rcl" package="0207/10" value="1K"/>
<element name="R7" library="rcl" package="0207/10" value="1K"/>
<element name="R8" library="rcl" package="0207/10" value="1K"/>
<element name="R9" library="rcl" package="0207/10" value="1K"/>
<element name="R10" library="rcl" package="0207/10" value="1K"/>
<element name="R11" library="rcl" package="0207/10" value="1K"/>
<element name="R12" library="rcl" package="0207/10" value="1K"/>
</elements>
<signals>
<signal name="GND">
<contactref element="IC1" pad="7"/>
<contactref element="C1" pad="2"/>
<contactref element="U$2" pad="C2"/>
<contactref element="SV2" pad="A"/>
<contactref element="SV2" pad="C"/>
<contactref element="SV2" pad="E"/>
<contactref element="SV2" pad="H"/>
<contactref element="SV2" pad="K"/>
<contactref element="SV2" pad="M"/>
<contactref element="SV2" pad="P"/>
<contactref element="SV2" pad="S"/>
<contactref element="SV2" pad="U"/>
<contactref element="SV2" pad="W"/>
<contactref element="SV2" pad="Y"/>
<contactref element="SV2" pad="AA"/>
<contactref element="SV2" pad="CC"/>
<contactref element="SV2" pad="EE"/>
<contactref element="SV2" pad="HH"/>
<contactref element="SV2" pad="KK"/>
<contactref element="SV2" pad="MM"/>
<contactref element="SV2" pad="PP"/>
<contactref element="SV2" pad="SS"/>
<contactref element="SV2" pad="UU"/>
<contactref element="SV5" pad="1"/>
<contactref element="SV5" pad="3"/>
<contactref element="SV5" pad="5"/>
<contactref element="SV5" pad="7"/>
<contactref element="SV5" pad="9"/>
<contactref element="SV5" pad="11"/>
<contactref element="SV5" pad="13"/>
</signal>
<signal name="!TM_ENAB">
<contactref element="IC1" pad="11"/>
<contactref element="R4" pad="1"/>
<contactref element="SV2" pad="NN"/>
<contactref element="SV5" pad="2"/>
</signal>
<signal name="WRT_ECHO">
<contactref element="U$2" pad="S1"/>
<contactref element="SV2" pad="T"/>
<contactref element="SV5" pad="14"/>
</signal>
<signal name="!ALL_HLT">
<contactref element="IC1" pad="9"/>
<contactref element="R3" pad="1"/>
<contactref element="SV2" pad="RR"/>
<contactref element="SV5" pad="4"/>
</signal>
<signal name="UNIT">
<contactref element="IC1" pad="5"/>
<contactref element="SV1" pad="1"/>
<contactref element="SV1" pad="3"/>
<contactref element="SV1" pad="5"/>
<contactref element="SV1" pad="7"/>
<contactref element="SV2" pad="LL"/>
<contactref element="SV5" pad="6"/>
</signal>
<signal name="FWD">
<contactref element="U$2" pad="H1"/>
<contactref element="IC1" pad="4"/>
</signal>
<signal name="STOP">
<contactref element="IC1" pad="1"/>
<contactref element="R1" pad="1"/>
<contactref element="U$2" pad="B1"/>
<contactref element="SV2" pad="JJ"/>
<contactref element="SV5" pad="10"/>
</signal>
<signal name="SEL_ECHO">
<contactref element="U$2" pad="P1"/>
<contactref element="SV2" pad="N"/>
<contactref element="SV5" pad="12"/>
</signal>
<signal name="VCC">
<contactref element="IC1" pad="14"/>
<contactref element="C1" pad="1"/>
<contactref element="R1" pad="2"/>
<contactref element="R2" pad="2"/>
<contactref element="R3" pad="2"/>
<contactref element="R4" pad="2"/>
<contactref element="U$2" pad="A2"/>
<contactref element="R5" pad="2"/>
<contactref element="R9" pad="2"/>
<contactref element="R6" pad="2"/>
<contactref element="R7" pad="2"/>
<contactref element="R8" pad="2"/>
<contactref element="R10" pad="2"/>
<contactref element="R11" pad="2"/>
<contactref element="R12" pad="2"/>
</signal>
<signal name="TM_ENAB">
<contactref element="IC1" pad="10"/>
<contactref element="U$2" pad="M1"/>
</signal>
<signal name="GO">
<contactref element="IC1" pad="2"/>
<contactref element="U$2" pad="D1"/>
</signal>
<signal name="REV">
<contactref element="U$2" pad="E1"/>
<contactref element="IC1" pad="3"/>
<contactref element="R2" pad="1"/>
<contactref element="SV2" pad="TT"/>
<contactref element="SV5" pad="8"/>
</signal>
<signal name="ALL_HLT">
<contactref element="IC1" pad="8"/>
<contactref element="U$2" pad="J1"/>
</signal>
<signal name="UNIT0">
<contactref element="U$2" pad="V2"/>
<contactref element="SV1" pad="2"/>
<contactref element="R5" pad="1"/>
</signal>
<signal name="UNIT2">
<contactref element="U$2" pad="H2"/>
<contactref element="SV1" pad="4"/>
<contactref element="R6" pad="1"/>
</signal>
<signal name="!UNIT">
<contactref element="IC1" pad="6"/>
<contactref element="SV3" pad="1"/>
<contactref element="SV3" pad="3"/>
<contactref element="SV3" pad="5"/>
<contactref element="SV3" pad="7"/>
</signal>
<signal name="UNIT1">
<contactref element="U$2" pad="E2"/>
<contactref element="SV3" pad="2"/>
<contactref element="R9" pad="1"/>
</signal>
<signal name="UNIT4">
<contactref element="U$2" pad="M2"/>
<contactref element="SV1" pad="6"/>
<contactref element="R7" pad="1"/>
</signal>
<signal name="UNIT5">
<contactref element="U$2" pad="P2"/>
<contactref element="SV3" pad="6"/>
<contactref element="R11" pad="1"/>
</signal>
<signal name="UNIT3">
<contactref element="U$2" pad="K2"/>
<contactref element="SV3" pad="4"/>
<contactref element="R10" pad="1"/>
</signal>
<signal name="UNIT7">
<contactref element="U$2" pad="T2"/>
<contactref element="SV3" pad="8"/>
<contactref element="R12" pad="1"/>
</signal>
<signal name="UNIT6">
<contactref element="U$2" pad="S2"/>
<contactref element="SV1" pad="8"/>
<contactref element="R8" pad="1"/>
</signal>
<signal name="RMT">
<contactref element="SV2" pad="F"/>
</signal>
<signal name="WTT">
<contactref element="SV2" pad="BB"/>
</signal>
<signal name="RTT">
<contactref element="SV2" pad="J"/>
</signal>
<signal name="WD0">
<contactref element="SV2" pad="FF"/>
</signal>
<signal name="RD0">
<contactref element="SV2" pad="D"/>
</signal>
<signal name="WD1">
<contactref element="SV2" pad="DD"/>
</signal>
<signal name="RD1">
<contactref element="SV2" pad="L"/>
</signal>
<signal name="WD2">
<contactref element="SV2" pad="X"/>
</signal>
<signal name="RD2">
<contactref element="SV2" pad="V"/>
</signal>
<signal name="WD_ENAB">
<contactref element="SV2" pad="Z"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
