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@@ -961,8 +961,6 @@ Text Label 6400 2550 2 50 ~ 0
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~INT
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Wire Bus Line
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4550 600 6500 600
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-Wire Bus Line
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- 2600 600 4550 600
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Connection ~ 4550 600
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Connection ~ 8250 600
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Wire Bus Line
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@@ -1359,21 +1357,6 @@ Connection ~ 3150 5900
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Wire Wire Line
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3150 5900 3150 6000
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$Comp
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-L power:GND #PWR0107
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-U 1 1 61ABFEFE
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-P 3600 6050
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-F 0 "#PWR0107" H 3600 5800 50 0001 C CNN
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-F 1 "GND" H 3605 5877 50 0000 C CNN
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-F 2 "" H 3600 6050 50 0001 C CNN
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-F 3 "" H 3600 6050 50 0001 C CNN
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- 1 3600 6050
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- 1 0 0 -1
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-$EndComp
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-Wire Wire Line
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- 3600 6050 3600 6000
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-Wire Wire Line
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- 3600 6000 4150 6000
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-$Comp
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L power:+5V #PWR0109
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U 1 1 61AD737B
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P 4650 5350
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@@ -1527,6 +1510,177 @@ Wire Wire Line
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8400 3050 8400 3150
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Wire Wire Line
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8400 3050 8950 3050
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+Text Label 1800 5800 3 50 ~ 0
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+A13
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+Text Label 1900 5800 3 50 ~ 0
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+A12
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+Wire Wire Line
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+ 2100 6250 2100 5800
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+Text Label 2100 5800 3 50 ~ 0
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+A10
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+Entry Wire Line
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+ 2100 5800 2000 5700
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+Text Label 2000 5800 3 50 ~ 0
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+A11
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+Text Label 1700 5800 3 50 ~ 0
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+A14
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+Wire Wire Line
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+ 2000 6250 2000 5800
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+Entry Wire Line
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+ 1700 5800 1600 5700
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+Entry Wire Line
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+ 1800 5800 1700 5700
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+Entry Wire Line
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+ 1900 5800 1800 5700
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+Entry Wire Line
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+ 2000 5800 1900 5700
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+Wire Wire Line
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+ 1900 6250 1900 5800
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+Wire Wire Line
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+ 1800 6250 1800 5800
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+Wire Wire Line
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+ 1700 6250 1700 5800
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+$Comp
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+L 74xx:74LS21 U4
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+U 1 1 611F90F9
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+P 2250 6550
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+F 0 "U4" V 2204 6788 50 0000 L CNN
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+F 1 "74LS21" V 2295 6788 50 0000 L CNN
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+F 2 "Package_DIP:DIP-14_W7.62mm" H 2250 6550 50 0001 C CNN
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+F 3 "http://www.ti.com/lit/gpn/sn74LS21" H 2250 6550 50 0001 C CNN
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+ 1 2250 6550
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+ 0 1 1 0
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+$EndComp
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+$Comp
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+L 74xx:74LS21 U4
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+U 2 1 6120323E
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+P 1850 6550
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+F 0 "U4" V 1804 6788 50 0000 L CNN
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+F 1 "74LS21" V 1895 6788 50 0000 L CNN
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+F 2 "Package_DIP:DIP-14_W7.62mm" H 1850 6550 50 0001 C CNN
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+F 3 "http://www.ti.com/lit/gpn/sn74LS21" H 1850 6550 50 0001 C CNN
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+ 2 1850 6550
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+ 0 1 1 0
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+$EndComp
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+$Comp
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+L 74xx:74LS21 U4
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+U 3 1 612051A6
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+P 950 6150
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+F 0 "U4" H 1180 6196 50 0000 L CNN
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+F 1 "74LS21" H 1180 6105 50 0000 L CNN
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+F 2 "Package_DIP:DIP-14_W7.62mm" H 950 6150 50 0001 C CNN
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+F 3 "http://www.ti.com/lit/gpn/sn74LS21" H 950 6150 50 0001 C CNN
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+ 3 950 6150
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+ 1 0 0 -1
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+$EndComp
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+Wire Wire Line
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+ 1850 6850 1850 7000
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+Wire Wire Line
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+ 1850 7000 2850 7000
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+Wire Wire Line
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+ 2850 7000 2850 6000
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+Wire Wire Line
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+ 2850 6000 2200 6000
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+Wire Wire Line
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+ 2200 6000 2200 6250
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+$Comp
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+L power:+5V #PWR0107
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+U 1 1 61221560
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+P 2300 5850
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+F 0 "#PWR0107" H 2300 5700 50 0001 C CNN
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+F 1 "+5V" H 2315 6023 50 0000 C CNN
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+F 2 "" H 2300 5850 50 0001 C CNN
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+F 3 "" H 2300 5850 50 0001 C CNN
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+ 1 2300 5850
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+ 1 0 0 -1
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+$EndComp
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+Wire Wire Line
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+ 2300 6150 2400 6150
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+Wire Wire Line
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+ 2400 6150 2400 6250
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+Wire Wire Line
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+ 2300 5850 2300 6150
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+Connection ~ 2300 6150
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+Wire Wire Line
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+ 2300 6150 2300 6250
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+Wire Wire Line
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+ 2250 6850 3600 6850
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+Wire Wire Line
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+ 3600 6850 3600 6000
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+Wire Wire Line
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+ 3600 6000 4150 6000
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+Wire Bus Line
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+ 1600 5700 1600 600
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+Wire Bus Line
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+ 1600 600 2600 600
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+Connection ~ 2600 600
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+Wire Bus Line
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+ 2600 600 4550 600
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+$Comp
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+L Device:C_Small C1
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+U 1 1 612856BC
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+P 9700 5150
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+F 0 "C1" H 9792 5196 50 0000 L CNN
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+F 1 "100nF" H 9792 5105 50 0000 L CNN
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+F 2 "Capacitor_THT:C_Disc_D4.7mm_W2.5mm_P5.00mm" H 9700 5150 50 0001 C CNN
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+F 3 "~" H 9700 5150 50 0001 C CNN
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+ 1 9700 5150
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+ 1 0 0 -1
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+$EndComp
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+$Comp
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+L power:+5V #PWR0116
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+U 1 1 61285AFC
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+P 9700 5000
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+F 0 "#PWR0116" H 9700 4850 50 0001 C CNN
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+F 1 "+5V" H 9715 5173 50 0000 C CNN
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+F 2 "" H 9700 5000 50 0001 C CNN
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+F 3 "" H 9700 5000 50 0001 C CNN
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+ 1 9700 5000
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+ 1 0 0 -1
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+$EndComp
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+$Comp
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+L power:GND #PWR0117
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+U 1 1 61285B06
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+P 9700 5300
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+F 0 "#PWR0117" H 9700 5050 50 0001 C CNN
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+F 1 "GND" H 9705 5127 50 0000 C CNN
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+F 2 "" H 9700 5300 50 0001 C CNN
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+F 3 "" H 9700 5300 50 0001 C CNN
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+ 1 9700 5300
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+ 1 0 0 -1
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+$EndComp
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+Wire Wire Line
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+ 9700 5250 9700 5300
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+Wire Wire Line
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+ 9700 5000 9700 5050
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+$Comp
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+L power:+5V #PWR0118
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+U 1 1 612A2BAC
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+P 950 5550
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+F 0 "#PWR0118" H 950 5400 50 0001 C CNN
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+F 1 "+5V" H 965 5723 50 0000 C CNN
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+F 2 "" H 950 5550 50 0001 C CNN
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+F 3 "" H 950 5550 50 0001 C CNN
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+ 1 950 5550
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+ 1 0 0 -1
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+$EndComp
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+Wire Wire Line
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+ 950 5550 950 5650
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+$Comp
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+L power:GND #PWR0119
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+U 1 1 612BFB09
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+P 950 6700
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+F 0 "#PWR0119" H 950 6450 50 0001 C CNN
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+F 1 "GND" H 955 6527 50 0000 C CNN
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+F 2 "" H 950 6700 50 0001 C CNN
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+F 3 "" H 950 6700 50 0001 C CNN
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+ 1 950 6700
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+ 1 0 0 -1
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+$EndComp
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+Wire Wire Line
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+ 950 6650 950 6700
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+Wire Bus Line
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+ 1600 5700 2000 5700
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Wire Bus Line
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8250 600 8250 1950
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Wire Bus Line
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