Apple-2-HW/unified_retro_keyboard
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d5208f73bf
unified_retro_keyboard/hardware/interface-osi/Sound.sch
Dave 01f57f69e1 Circuit tweaks 
- Add power-on reset to reset circuit
- Modify Shiftlock circuit to require only one jumper
2020-04-23 11:27:54 -05:00

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EESchema Schematic File Version 4
EELAYER 30 0
EELAYER END
$Descr A4 11693 8268
encoding utf-8
Sheet 2 3
Title "OSI Interface"
Date "2020-04-23"
Rev "2"
Comp "OSIWeb.org"
Comment1 "Sound Circuit"
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Wire Wire Line
1150 6000 1700 6000
Text HLabel 1150 6000 0 50 Input ~ 0
SOUND_EN
$Comp
L power:GND #PWR015
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F 3 "" H 1500 6700 50 0001 C CNN
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1 0 0 -1
$EndComp
Wire Wire Line
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Wire Wire Line
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Text HLabel 10500 4050 2 50 Output ~ 0
Noise2
Text HLabel 8150 900 2 50 Output ~ 0
Noise1
Wire Wire Line
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$Comp
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1 7300 900
0 1 1 0
$EndComp
Wire Wire Line
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Connection ~ 6500 900
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 6500 2100
Wire Wire Line
6500 1900 6500 1700
Connection ~ 6500 1900
Connection ~ 6500 1700
Wire Wire Line
6500 1500 6500 1300
Connection ~ 6500 1500
Wire Wire Line
6500 1300 6500 1100
Connection ~ 6500 1300
Wire Wire Line
6500 1100 6500 900
Connection ~ 6500 1100
Wire Wire Line
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Text Label 3900 2300 0 50 ~ 0
S7
Text Label 3900 2100 0 50 ~ 0
S6
Text Label 3900 1900 0 50 ~ 0
S5
Text Label 3900 1700 0 50 ~ 0
S4
Text Label 3900 1500 0 50 ~ 0
S3
Text Label 3900 1300 0 50 ~ 0
S2
Text Label 3900 1100 0 50 ~ 0
S1
Text Label 3900 900 0 50 ~ 0
S0
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Connection ~ 3600 5800
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 3500 5700
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 3400 5600
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 3300 5500
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 3200 5400
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 3100 5300
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 3000 5200
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 2900 5100
Wire Wire Line
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Wire Wire Line
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$EndComp
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Wire Wire Line
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$Comp
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F 3 "http://www.vishay.com/docs/85622/1n914.pdf" H 5650 2300 50 0001 C CNN
1 5650 2300
1 0 0 -1
$EndComp
$Comp
L Device:R_US R8
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F 3 "~" H 5150 2300 50 0001 C CNN
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0 1 1 0
$EndComp
Wire Wire Line
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Wire Wire Line
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$Comp
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0 1 1 0
$EndComp
$Comp
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$EndComp
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Wire Wire Line
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$EndComp
$Comp
L Device:R_US R6
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$EndComp
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Wire Wire Line
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$EndComp
$Comp
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$EndComp
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Wire Wire Line
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$Comp
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F 3 "http://www.vishay.com/docs/85622/1n914.pdf" H 5650 1500 50 0001 C CNN
1 5650 1500
1 0 0 -1
$EndComp
$Comp
L Device:R_US R4
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F 0 "R4" V 5100 1625 50 0000 C CNN
F 1 "8.2K" V 5200 1290 50 0000 C CNN
F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 5190 1490 50 0001 C CNN
F 3 "~" H 5150 1500 50 0001 C CNN
1 5150 1500
0 1 1 0
$EndComp
Wire Wire Line
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Wire Wire Line
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$Comp
L Device:R_US R3
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F 3 "~" H 5150 1300 50 0001 C CNN
1 5150 1300
0 1 1 0
$EndComp
$Comp
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$EndComp
Wire Wire Line
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Wire Wire Line
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F 3 "http://www.vishay.com/docs/85622/1n914.pdf" H 5650 1100 50 0001 C CNN
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1 0 0 -1
$EndComp
$Comp
L Device:R_US R2
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F 0 "R2" V 5100 1225 50 0000 C CNN
F 1 "33K" V 5200 890 50 0000 C CNN
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F 3 "~" H 5150 1100 50 0001 C CNN
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0 1 1 0
$EndComp
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$Comp
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F 3 "~" H 5150 900 50 0001 C CNN
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$EndComp
Wire Wire Line
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Wire Wire Line
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Connection ~ 7250 4350
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Connection ~ 7200 3250
Wire Wire Line
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Wire Wire Line
7200 3650 7200 3600
$Comp
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F 1 "GND" H 7205 3477 50 0000 C CNN
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F 3 "" H 7200 3650 50 0001 C CNN
1 7200 3650
1 0 0 -1
$EndComp
$Comp
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F 1 "GND" H 7255 4577 50 0000 C CNN
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F 3 "" H 7250 4750 50 0001 C CNN
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$EndComp
$Comp
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F 3 "" H 7950 4900 50 0001 C CNN
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$EndComp
Wire Wire Line
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Connection ~ 10000 4750
Wire Wire Line
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$Comp
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$EndComp
$Comp
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$EndComp
Wire Wire Line
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Wire Wire Line
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Connection ~ 10100 4050
Wire Wire Line
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Wire Wire Line
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Connection ~ 9850 4050
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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$Comp
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$EndComp
$Comp
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F 3 "~" H 7200 3450 50 0001 C CNN
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1 0 0 -1
$EndComp
$Comp
L Device:C C16
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F 1 "C" V 10189 4050 50 0000 C CNN
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F 3 "~" H 10350 4050 50 0001 C CNN
1 10350 4050
0 1 1 0
$EndComp
$Comp
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F 3 "~" H 9850 4350 50 0001 C CNN
1 9850 4350
1 0 0 -1
$EndComp
$Comp
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F 3 "~" H 10100 4350 50 0001 C CNN
1 10100 4350
1 0 0 -1
$EndComp
$Comp
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F 3 "~" H 9600 4050 50 0001 C CNN
1 9600 4050
0 1 1 0
$EndComp
NoConn ~ 6250 6900
NoConn ~ 6250 6400
NoConn ~ 6250 6300
NoConn ~ 6250 6200
NoConn ~ 6250 6100
NoConn ~ 6200 4150
NoConn ~ 6200 4050
NoConn ~ 6200 3950
NoConn ~ 6200 3850
Connection ~ 6650 6700
Wire Wire Line
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Wire Wire Line
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Connection ~ 6650 4450
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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$Comp
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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$Comp
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F 3 "" H 7500 3500 50 0001 C CNN
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$EndComp
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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NI
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KD6
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KD5
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KD4
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1 0 0 -1
$EndComp
$Comp
L 74xx:74LS390 U9
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$Comp
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1 0 0 -1
$EndComp
Connection ~ 5750 7350
$Comp
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F 3 "" H 5750 7350 50 0001 C CNN
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$EndComp
Connection ~ 5700 5150
$Comp
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F 1 "GND" H 5705 4977 50 0000 C CNN
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1 0 0 -1
$EndComp
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
6200 4750 6250 4750
Wire Wire Line
5250 5500 6350 5500
Wire Wire Line
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Wire Wire Line
6200 4650 6350 4650
Wire Wire Line
5250 5500 5250 6100
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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$Comp
L unikbd:74LS193 U8
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1 5750 6500
1 0 0 -1
$EndComp
$Comp
L unikbd:74LS193 U7
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1 5700 4250
1 0 0 -1
$EndComp
Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
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Wire Wire Line
4750 5600 4750 6600
Wire Wire Line
2700 5600 3400 5600
Wire Wire Line
4900 5500 4900 6500
Wire Wire Line
2700 5500 3300 5500
Wire Wire Line
4900 5400 3200 5400
Wire Wire Line
4900 4550 4900 5400
Wire Wire Line
4750 5300 3100 5300
Wire Wire Line
4750 4450 4750 5300
Wire Wire Line
4600 5200 4600 4350
Wire Wire Line
2700 5200 3000 5200
Wire Wire Line
4450 5100 4450 4250
$Comp
L 74xx:74LS373 U6
U 1 1 6013A410
P 2200 5600
F 0 "U6" H 2200 6581 50 0000 C CNN
F 1 "74LS373" H 2200 6490 50 0000 C CNN
F 2 "Package_DIP:DIP-20_W7.62mm" H 2200 5600 50 0001 C CNN
F 3 "http://www.ti.com/lit/gpn/sn74LS373" H 2200 5600 50 0001 C CNN
1 2200 5600
1 0 0 -1
$EndComp
$EndSCHEMATC
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