<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE eagle SYSTEM "eagle.dtd">
<eagle version="6.6.0">
<drawing>
<board>
<plain>
<wire x1="101.6" y1="76.2" x2="0" y2="76.2" width="0" layer="20"/>
<wire x1="0" y1="76.2" x2="0" y2="0" width="0" layer="20"/>
<wire x1="0" y1="0" x2="101.6" y2="0" width="0" layer="20"/>
<wire x1="101.6" y1="0" x2="101.6" y2="76.2" width="0" layer="20"/>
</plain>
<libraries>
<library name="74xx-us">
<packages>
<package name="DIL14">
<description>&lt;b&gt;Dual In Line Package&lt;/b&gt;</description>
</package>
<package name="DIL20">
<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>
<package name="E2,5-6E">
<description>&lt;b&gt;ELECTROLYTIC CAPACITOR&lt;/b&gt;&lt;p&gt;
grid 2.54 mm, diameter 6 mm</description>
</package>
</packages>
</library>
<library name="con-harting-h">
<packages>
<package name="40H">
<description>&lt;b&gt;CONNECTOR&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="con-subd">
<packages>
<package name="F25H">
<description>&lt;b&gt;SUB-D&lt;/b&gt;</description>
</package>
</packages>
</library>
<library name="con-amp">
<packages>
<package name="FLOPPY-4">
<description>&lt;b&gt;Power connector (Floppy Drive)&lt;/b&gt;&lt;p&gt;
MATE N-LOK</description>
</package>
</packages>
</library>
<library name="dec-con">
<description>DEC Edge Connectors and Parts</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="U2" library="74xx-us" package="DIL14" value="74LS74N"/>
<element name="U3" library="dec-con" package="DIL14" value="74LS38N"/>
<element name="U4" library="dec-con" package="DIL14" value="74LS38N"/>
<element name="U1" library="74xx-us" package="DIL20" value="74LS240N"/>
<element name="R1" library="rcl" package="0207/10" value="180"/>
<element name="R2" library="rcl" package="0207/10" value="180"/>
<element name="R3" library="rcl" package="0207/10" value="180"/>
<element name="PDP-8" library="con-harting-h" package="40H" value="">
<attribute name="NAME"/>
<attribute name="VALUE"/>
<attribute name="OC_NEWARK" value="unknown"/>
<attribute name="MPN" value=""/>
<attribute name="MF" value=""/>
<attribute name="OC_FARNELL" value="unknown"/>
</element>
<element name="R4" library="rcl" package="0207/10" value="180"/>
<element name="R5" library="rcl" package="0207/10" value="1.2K"/>
<element name="R6" library="rcl" package="0207/10" value="390"/>
<element name="R7" library="rcl" package="0207/10" value="390"/>
<element name="R8" library="rcl" package="0207/10" value="390"/>
<element name="R9" library="rcl" package="0207/10" value="390"/>
<element name="R10" library="rcl" package="0207/10" value="1,2K"/>
<element name="R11" library="rcl" package="0207/10" value="1,2K"/>
<element name="R12" library="rcl" package="0207/10" value="1,2K"/>
<element name="R13" library="rcl" package="0207/10" value="1,2K"/>
<element name="R14" library="rcl" package="0207/10" value="180"/>
<element name="R15" library="rcl" package="0207/10" value="180"/>
<element name="R16" library="rcl" package="0207/10" value="180"/>
<element name="R17" library="rcl" package="0207/10" value="180"/>
<element name="R18" library="rcl" package="0207/10" value="180"/>
<element name="R19" library="rcl" package="0207/10" value="390"/>
<element name="R20" library="rcl" package="0207/10" value="390"/>
<element name="R21" library="rcl" package="0207/10" value="390"/>
<element name="R22" library="rcl" package="0207/10" value="390"/>
<element name="R23" library="rcl" package="0207/10" value="390"/>
<element name="R24" library="rcl" package="0207/10" value="1.2K"/>
<element name="R25" library="rcl" package="0207/10" value="30"/>
<element name="R26" library="rcl" package="0207/10" value="30"/>
<element name="R27" library="rcl" package="0207/10" value="30"/>
<element name="R28" library="rcl" package="0207/10" value="30"/>
<element name="R29" library="rcl" package="0207/10" value="180"/>
<element name="PC" library="con-subd" package="F25H" value="">
<attribute name="OC_NEWARK" value="unknown"/>
<attribute name="MPN" value=""/>
<attribute name="MF" value=""/>
<attribute name="OC_FARNELL" value="unknown"/>
</element>
<element name="R30" library="rcl" package="0207/10" value="1.2K"/>
<element name="J1" library="con-amp" package="FLOPPY-4" value=""/>
<element name="C1" library="rcl" package="C050-025X075" value=".01uF"/>
<element name="C2" library="rcl" package="C050-025X075" value=".01uF"/>
<element name="C3" library="rcl" package="C050-025X075" value=".01uF"/>
<element name="C4" library="rcl" package="C050-025X075" value=".01uF"/>
<element name="C5" library="rcl" package="E2,5-6E" value="6.8uF"/>
<element name="C6" library="rcl" package="E2,5-6E" value="6.8uF"/>
</elements>
<signals>
<signal name="VCC">
<contactref element="U2" pad="14"/>
<contactref element="U3" pad="14"/>
<contactref element="U4" pad="14"/>
<contactref element="R1" pad="2"/>
<contactref element="R2" pad="2"/>
<contactref element="R3" pad="2"/>
<contactref element="R4" pad="2"/>
<contactref element="R14" pad="2"/>
<contactref element="R15" pad="2"/>
<contactref element="R16" pad="2"/>
<contactref element="R17" pad="2"/>
<contactref element="R18" pad="2"/>
<contactref element="R5" pad="2"/>
<contactref element="R29" pad="2"/>
<contactref element="U1" pad="20"/>
<contactref element="R10" pad="2"/>
<contactref element="R11" pad="2"/>
<contactref element="R12" pad="2"/>
<contactref element="R13" pad="2"/>
<contactref element="R24" pad="2"/>
<contactref element="R30" pad="2"/>
<contactref element="C1" pad="1"/>
<contactref element="C2" pad="1"/>
<contactref element="C3" pad="1"/>
<contactref element="C4" pad="1"/>
<contactref element="C5" pad="+"/>
<contactref element="C6" pad="+"/>
</signal>
<signal name="N$6">
<contactref element="R14" pad="1"/>
<contactref element="R19" pad="2"/>
<contactref element="PDP-8" pad="33"/>
<contactref element="U3" pad="3"/>
</signal>
<signal name="N$7">
<contactref element="R15" pad="1"/>
<contactref element="R20" pad="2"/>
<contactref element="U3" pad="6"/>
<contactref element="PDP-8" pad="25"/>
</signal>
<signal name="N$8">
<contactref element="R16" pad="1"/>
<contactref element="R21" pad="2"/>
<contactref element="U3" pad="8"/>
<contactref element="PDP-8" pad="21"/>
</signal>
<signal name="N$9">
<contactref element="R17" pad="1"/>
<contactref element="R22" pad="2"/>
<contactref element="U3" pad="11"/>
<contactref element="PDP-8" pad="9"/>
</signal>
<signal name="N$10">
<contactref element="R18" pad="1"/>
<contactref element="R23" pad="2"/>
<contactref element="U4" pad="6"/>
<contactref element="PDP-8" pad="5"/>
</signal>
<signal name="GND">
<contactref element="R9" pad="1"/>
<contactref element="R8" pad="1"/>
<contactref element="R7" pad="1"/>
<contactref element="R6" pad="1"/>
<contactref element="R19" pad="1"/>
<contactref element="R20" pad="1"/>
<contactref element="R21" pad="1"/>
<contactref element="R22" pad="1"/>
<contactref element="R23" pad="1"/>
<contactref element="U2" pad="2"/>
<contactref element="U2" pad="3"/>
<contactref element="U1" pad="1"/>
<contactref element="PDP-8" pad="2"/>
<contactref element="PDP-8" pad="40"/>
<contactref element="PDP-8" pad="4"/>
<contactref element="PDP-8" pad="6"/>
<contactref element="PDP-8" pad="8"/>
<contactref element="PDP-8" pad="10"/>
<contactref element="PDP-8" pad="12"/>
<contactref element="PDP-8" pad="14"/>
<contactref element="PDP-8" pad="16"/>
<contactref element="PDP-8" pad="38"/>
<contactref element="PDP-8" pad="36"/>
<contactref element="PDP-8" pad="34"/>
<contactref element="PDP-8" pad="32"/>
<contactref element="PDP-8" pad="30"/>
<contactref element="PDP-8" pad="28"/>
<contactref element="PDP-8" pad="26"/>
<contactref element="PDP-8" pad="24"/>
<contactref element="PDP-8" pad="22"/>
<contactref element="PDP-8" pad="20"/>
<contactref element="PDP-8" pad="18"/>
<contactref element="U2" pad="7"/>
<contactref element="U3" pad="7"/>
<contactref element="U4" pad="7"/>
<contactref element="U1" pad="10"/>
<contactref element="C1" pad="2"/>
<contactref element="C2" pad="2"/>
<contactref element="C3" pad="2"/>
<contactref element="C4" pad="2"/>
<contactref element="J1" pad="3"/>
<contactref element="J1" pad="2"/>
<contactref element="C5" pad="-"/>
<contactref element="C6" pad="-"/>
</signal>
<signal name="N$2">
<contactref element="U1" pad="4"/>
<contactref element="R2" pad="1"/>
<contactref element="R7" pad="2"/>
<contactref element="PDP-8" pad="37"/>
</signal>
<signal name="N$1">
<contactref element="U1" pad="2"/>
<contactref element="R1" pad="1"/>
<contactref element="R6" pad="2"/>
<contactref element="PDP-8" pad="29"/>
</signal>
<signal name="N$3">
<contactref element="PDP-8" pad="13"/>
<contactref element="U1" pad="6"/>
<contactref element="R3" pad="1"/>
<contactref element="R8" pad="2"/>
</signal>
<signal name="N$4">
<contactref element="PDP-8" pad="17"/>
<contactref element="R4" pad="1"/>
<contactref element="R9" pad="2"/>
<contactref element="U1" pad="8"/>
<contactref element="U4" pad="3"/>
</signal>
<signal name="N$16">
<contactref element="U4" pad="1"/>
<contactref element="U4" pad="2"/>
<contactref element="PC" pad="1"/>
<contactref element="R10" pad="1"/>
</signal>
<signal name="N$17">
<contactref element="U3" pad="1"/>
<contactref element="U3" pad="2"/>
<contactref element="PC" pad="2"/>
<contactref element="R11" pad="1"/>
</signal>
<signal name="N$18">
<contactref element="U3" pad="4"/>
<contactref element="U3" pad="5"/>
<contactref element="PC" pad="3"/>
<contactref element="R12" pad="1"/>
</signal>
<signal name="N$19">
<contactref element="U3" pad="9"/>
<contactref element="U3" pad="10"/>
<contactref element="PC" pad="4"/>
<contactref element="R13" pad="1"/>
</signal>
<signal name="N$20">
<contactref element="U4" pad="5"/>
<contactref element="U4" pad="4"/>
<contactref element="PC" pad="6"/>
<contactref element="R30" pad="1"/>
</signal>
<signal name="N$21">
<contactref element="U3" pad="13"/>
<contactref element="U3" pad="12"/>
<contactref element="PC" pad="5"/>
<contactref element="R24" pad="1"/>
</signal>
<signal name="N$22">
<contactref element="U2" pad="4"/>
<contactref element="U1" pad="18"/>
</signal>
<signal name="N$23">
<contactref element="U2" pad="1"/>
<contactref element="PC" pad="9"/>
<contactref element="R5" pad="1"/>
</signal>
<signal name="N$24">
<contactref element="U2" pad="5"/>
<contactref element="R25" pad="1"/>
</signal>
<signal name="N$25">
<contactref element="U1" pad="12"/>
<contactref element="R28" pad="1"/>
</signal>
<signal name="N$26">
<contactref element="U1" pad="14"/>
<contactref element="R27" pad="1"/>
</signal>
<signal name="N$27">
<contactref element="U1" pad="16"/>
<contactref element="R26" pad="1"/>
</signal>
<signal name="N$11">
<contactref element="R25" pad="2"/>
<contactref element="PC" pad="12"/>
</signal>
<signal name="N$12">
<contactref element="R26" pad="2"/>
<contactref element="PC" pad="11"/>
</signal>
<signal name="N$13">
<contactref element="R27" pad="2"/>
<contactref element="PC" pad="15"/>
</signal>
<signal name="N$14">
<contactref element="R28" pad="2"/>
<contactref element="PC" pad="13"/>
</signal>
<signal name="N$15">
<contactref element="PDP-8" pad="3"/>
<contactref element="R29" pad="1"/>
</signal>
</signals>
</board>
</drawing>
</eagle>
