EESchema Schematic File Version 1
LIBS:power,device,conn,linear,regul,74xx,cmos4000,adc-dac,memory,xilinx,special,microcontrollers,dsp,microchip,analog_switches,motorola,texas,intel,audio,interface,digital-audio,philips,display,cypress,siliconi,contrib,valves
EELAYER 23  0
EELAYER END
$Descr A4 11700 8267
Sheet 1 1
Title "LPTIO"
Date "29 may 2010"
Rev "1.0"
Comp "Created: Pozsar Zsolt"
Comment1 "Reg.no.: LPTIO/3"
Comment2 ""
Comment3 ""
Comment4 ""
$EndDescr
Wire Wire Line
	1600 4350 2300 4350
Wire Wire Line
	2300 4350 2300 3500
Wire Wire Line
	2300 3500 4450 3500
Wire Wire Line
	4450 3500 4450 1150
Wire Wire Line
	4450 1150 7200 1150
Wire Wire Line
	7200 1150 7200 2550
Wire Wire Line
	7200 2550 7850 2550
Wire Wire Line
	2900 2200 4250 2200
Wire Wire Line
	7700 1250 7700 1850
Wire Wire Line
	7700 1250 4550 1250
Wire Wire Line
	7500 1450 7500 2050
Wire Wire Line
	7500 1450 4750 1450
Wire Wire Line
	2950 5900 2600 5900
Wire Wire Line
	2600 5900 2600 4200
Wire Wire Line
	2850 6250 2850 6000
Wire Wire Line
	1550 3000 6850 3000
Connection ~ 1700 2700
Wire Wire Line
	1550 2700 1700 2700
Connection ~ 2000 2500
Wire Wire Line
	2000 2500 2000 2400
Wire Wire Line
	1550 1350 3650 1350
Connection ~ 8450 950 
Wire Wire Line
	8450 950  8450 1750
Wire Wire Line
	1550 1550 1550 1950
Wire Wire Line
	1550 1950 3250 1950
Connection ~ 9200 2950
Wire Wire Line
	8700 2950 9200 2950
Connection ~ 5650 4950
Connection ~ 3650 6250
Wire Wire Line
	5650 6250 5650 4400
Wire Wire Line
	5050 2900 5050 3000
Wire Wire Line
	5250 2900 5250 3000
Wire Wire Line
	5900 2900 5900 3000
Wire Wire Line
	4950 2900 4950 3000
Wire Wire Line
	6650 2900 6650 3000
Connection ~ 4950 3000
Connection ~ 6650 3000
Wire Wire Line
	6700 2500 6850 2500
Wire Wire Line
	3650 2800 2900 2800
Wire Wire Line
	4250 1050 7300 1050
Wire Wire Line
	4250 1050 4250 4650
Wire Wire Line
	4550 1250 4550 3450
Wire Wire Line
	4750 1450 4750 3450
Wire Wire Line
	6750 3450 5350 3450
Wire Wire Line
	6750 3450 6750 4550
Wire Wire Line
	5450 2900 5450 3550
Wire Wire Line
	5450 3550 6650 3550
Wire Wire Line
	6650 3550 6650 4650
Wire Wire Line
	6500 2900 6500 3050
Wire Wire Line
	6500 3050 4950 3050
Wire Wire Line
	4950 3050 4950 3450
Wire Wire Line
	6300 2900 6300 3250
Wire Wire Line
	6300 3250 5150 3250
Wire Wire Line
	5150 3250 5150 3450
Connection ~ 6100 3000
Connection ~ 5900 3000
Connection ~ 5250 3000
Connection ~ 5050 3000
Connection ~ 3650 2800
Connection ~ 2750 4450
Wire Wire Line
	2750 4200 2750 4450
Connection ~ 2450 4850
Wire Wire Line
	2450 4200 2450 6450
Connection ~ 2750 3600
Wire Wire Line
	2750 3700 2750 3600
Wire Wire Line
	2650 5750 2650 5600
Connection ~ 2850 6250
Wire Wire Line
	2550 5350 2550 5400
Wire Wire Line
	2750 4950 2750 5200
Wire Wire Line
	2950 5000 2950 4550
Wire Wire Line
	7700 2350 7700 2950
Connection ~ 8800 4350
Wire Wire Line
	8800 4350 8800 4450
Wire Wire Line
	8800 4450 8350 4450
Wire Wire Line
	8350 4450 8350 4400
Connection ~ 5650 4450
Wire Wire Line
	5600 4450 5650 4450
Connection ~ 4250 2200
Wire Wire Line
	2000 2000 2000 1850
Connection ~ 2250 1950
Wire Wire Line
	2250 1950 2250 1850
Connection ~ 2750 1950
Wire Wire Line
	2750 1950 2750 1850
Wire Wire Line
	3250 1950 3250 1850
Connection ~ 2000 1350
Wire Wire Line
	2000 1350 2000 1450
Connection ~ 2500 1350
Wire Wire Line
	2500 1350 2500 1450
Connection ~ 3000 1350
Wire Wire Line
	3000 1350 3000 1450
Connection ~ 8350 4750
Wire Wire Line
	8250 4750 8350 4750
Connection ~ 5650 4700
Wire Wire Line
	5750 4700 5650 4700
Wire Wire Line
	5650 4400 5750 4400
Wire Wire Line
	7750 4850 6350 4850
Wire Wire Line
	6550 4700 6350 4700
Wire Wire Line
	6650 4550 6350 4550
Wire Wire Line
	6650 4650 7750 4650
Wire Wire Line
	6750 4400 6350 4400
Wire Wire Line
	7250 3300 6950 3300
Wire Wire Line
	6950 3300 6950 6350
Wire Wire Line
	4250 4650 1600 4650
Wire Wire Line
	2450 4850 1600 4850
Connection ~ 1700 6450
Wire Wire Line
	1700 6450 1600 6450
Connection ~ 1700 6050
Wire Wire Line
	1700 6050 1600 6050
Connection ~ 1700 5650
Wire Wire Line
	1700 5650 1600 5650
Wire Wire Line
	1700 5250 1600 5250
Wire Wire Line
	1600 6750 7150 6750
Wire Wire Line
	7150 6750 7150 4050
Wire Wire Line
	7150 4050 7250 4050
Wire Wire Line
	7700 2350 7850 2350
Wire Wire Line
	7700 2950 8200 2950
Wire Wire Line
	7500 2050 7850 2050
Wire Wire Line
	7700 1850 7850 1850
Wire Wire Line
	1600 4450 4400 4450
Wire Wire Line
	4400 4450 4400 5800
Wire Wire Line
	4400 5800 8850 5800
Wire Wire Line
	8850 5800 8850 4250
Wire Wire Line
	8850 4250 8750 4250
Wire Wire Line
	4350 5000 9800 5000
Wire Wire Line
	4350 5200 9800 5200
Wire Wire Line
	4350 5400 9800 5400
Wire Wire Line
	4350 5600 9800 5600
Wire Wire Line
	2750 4950 1600 4950
Wire Wire Line
	2650 5750 1600 5750
Wire Wire Line
	2550 5350 1600 5350
Wire Wire Line
	2950 4550 1600 4550
Wire Wire Line
	8750 3350 9050 3350
Wire Wire Line
	9050 3350 9050 4200
Wire Wire Line
	9050 4200 9450 4200
Wire Wire Line
	9450 4200 9450 4100
Wire Wire Line
	9450 4100 9800 4100
Wire Wire Line
	8750 4100 9350 4100
Wire Wire Line
	9350 4100 9350 3900
Wire Wire Line
	9350 3900 9800 3900
Wire Wire Line
	8750 3250 9150 3250
Wire Wire Line
	9150 3250 9150 3700
Wire Wire Line
	9150 3700 9800 3700
Wire Wire Line
	8750 4000 9300 4000
Wire Wire Line
	9300 4000 9300 3500
Wire Wire Line
	9300 3500 9800 3500
Wire Wire Line
	9800 2550 9050 2550
Wire Wire Line
	9800 2350 9050 2350
Wire Wire Line
	9800 2150 9050 2150
Wire Wire Line
	9800 1950 9050 1950
Connection ~ 9700 4200
Wire Wire Line
	9700 4200 9800 4200
Connection ~ 5150 5600
Wire Wire Line
	5150 4850 5150 5600
Connection ~ 4950 5400
Wire Wire Line
	4950 4850 4950 5400
Connection ~ 4750 5200
Wire Wire Line
	4750 4850 4750 5200
Connection ~ 4550 5000
Wire Wire Line
	4550 4850 4550 5000
Wire Wire Line
	2950 5700 2750 5700
Wire Wire Line
	2950 5500 2550 5500
Wire Wire Line
	2950 5300 2650 5300
Wire Wire Line
	2950 5100 2850 5100
Wire Wire Line
	2750 5200 2950 5200
Wire Wire Line
	2550 5400 2950 5400
Wire Wire Line
	2650 5600 2950 5600
Wire Wire Line
	9700 5800 9800 5800
Wire Wire Line
	4650 4850 4650 5100
Connection ~ 4650 5100
Wire Wire Line
	4850 4850 4850 5300
Connection ~ 4850 5300
Wire Wire Line
	5050 4850 5050 5500
Connection ~ 5050 5500
Wire Wire Line
	5250 4850 5250 5700
Connection ~ 5250 5700
Wire Wire Line
	9800 2650 9700 2650
Connection ~ 9700 5800
Wire Wire Line
	9050 1850 9800 1850
Wire Wire Line
	9050 2050 9800 2050
Wire Wire Line
	9050 2250 9800 2250
Wire Wire Line
	9800 2450 9050 2450
Wire Wire Line
	8750 3750 9250 3750
Wire Wire Line
	9250 3750 9250 3400
Wire Wire Line
	9250 3400 9800 3400
Wire Wire Line
	8750 3500 9200 3500
Wire Wire Line
	9200 3500 9200 3600
Wire Wire Line
	9200 3600 9800 3600
Wire Wire Line
	8750 3850 9350 3850
Wire Wire Line
	9350 3850 9350 3800
Wire Wire Line
	9350 3800 9800 3800
Wire Wire Line
	8750 3600 9100 3600
Wire Wire Line
	9100 3600 9100 4150
Wire Wire Line
	9100 4150 9400 4150
Wire Wire Line
	9400 4150 9400 4000
Wire Wire Line
	9400 4000 9800 4000
Wire Wire Line
	8750 4350 9700 4350
Connection ~ 9700 4350
Wire Wire Line
	1600 4750 2850 4750
Wire Wire Line
	1600 5150 2650 5150
Wire Wire Line
	1600 5550 2550 5550
Wire Wire Line
	1600 5950 2750 5950
Wire Wire Line
	9800 5700 4350 5700
Wire Wire Line
	9800 5500 4350 5500
Wire Wire Line
	9800 5300 4350 5300
Wire Wire Line
	9800 5100 4350 5100
Wire Wire Line
	7850 1950 7600 1950
Wire Wire Line
	1600 5450 1700 5450
Connection ~ 1700 5450
Wire Wire Line
	1600 5850 1700 5850
Connection ~ 1700 5850
Connection ~ 1700 6250
Wire Wire Line
	1700 6650 1600 6650
Connection ~ 1700 6650
Wire Wire Line
	2450 6450 5450 6450
Wire Wire Line
	5450 6450 5450 4850
Wire Wire Line
	7050 6550 7050 3800
Wire Wire Line
	7050 6550 1600 6550
Wire Wire Line
	7050 3800 7250 3800
Wire Wire Line
	1600 6150 6850 6150
Wire Wire Line
	6950 6350 1600 6350
Wire Wire Line
	7250 3550 6850 3550
Wire Wire Line
	6850 3550 6850 6150
Wire Wire Line
	6750 4550 7750 4550
Connection ~ 6750 4400
Connection ~ 6650 4550
Wire Wire Line
	7750 4750 6550 4750
Connection ~ 6550 4700
Connection ~ 6450 4850
Wire Wire Line
	5650 4850 5750 4850
Connection ~ 5650 4850
Wire Wire Line
	5650 4550 5750 4550
Connection ~ 5650 4550
Wire Wire Line
	8350 4550 8350 4850
Wire Wire Line
	8350 4850 8250 4850
Connection ~ 8350 4550
Wire Wire Line
	8350 4650 8250 4650
Connection ~ 8350 4650
Wire Wire Line
	3250 1450 3250 1350
Connection ~ 3250 1350
Wire Wire Line
	2750 1450 2750 1350
Connection ~ 2750 1350
Wire Wire Line
	2250 1450 2250 1350
Connection ~ 2250 1350
Wire Wire Line
	3000 1850 3000 1950
Connection ~ 3000 1950
Wire Wire Line
	2500 1850 2500 1950
Connection ~ 2500 1950
Connection ~ 2000 1950
Wire Wire Line
	4500 4400 3650 4400
Connection ~ 3650 4400
Wire Wire Line
	8450 2650 8450 2800
Wire Wire Line
	8350 3200 8350 3100
Wire Wire Line
	2850 6000 2950 6000
Wire Wire Line
	2850 4750 2850 5100
Wire Wire Line
	2650 5150 2650 5300
Wire Wire Line
	3650 6250 3650 6050
Wire Wire Line
	2550 5550 2550 5500
Wire Wire Line
	2750 5950 2750 5700
Wire Wire Line
	2450 3700 2450 3600
Wire Wire Line
	2450 3600 3650 3600
Connection ~ 3650 3600
Wire Wire Line
	2600 3600 2600 3700
Connection ~ 2600 3600
Wire Wire Line
	1550 2800 2400 2800
Connection ~ 5150 3000
Connection ~ 5800 3000
Wire Wire Line
	5250 3450 5250 3350
Wire Wire Line
	5250 3350 6200 3350
Wire Wire Line
	6200 3350 6200 2900
Wire Wire Line
	5050 3450 5050 3150
Wire Wire Line
	5050 3150 6400 3150
Wire Wire Line
	6400 3150 6400 2900
Connection ~ 6000 3000
Wire Wire Line
	6550 4750 6550 3700
Wire Wire Line
	6550 3700 5550 3700
Wire Wire Line
	5550 3700 5550 2900
Wire Wire Line
	5350 3450 5350 2900
Wire Wire Line
	5650 2900 5650 3800
Wire Wire Line
	5650 3800 6450 3800
Wire Wire Line
	6450 3800 6450 4850
Wire Wire Line
	4650 3450 4650 1350
Wire Wire Line
	4950 1500 4950 1050
Connection ~ 4950 1050
Wire Wire Line
	8450 2800 6850 2800
Connection ~ 6850 2800
Wire Wire Line
	6850 2500 6850 3000
Wire Wire Line
	6100 2900 6100 3000
Wire Wire Line
	6000 2900 6000 3000
Wire Wire Line
	5800 2900 5800 3000
Wire Wire Line
	5150 2900 5150 3000
Connection ~ 3650 2500
Connection ~ 3650 1350
Wire Wire Line
	5550 4850 5550 4950
Wire Wire Line
	5550 4950 5650 4950
Wire Wire Line
	9700 2650 9700 6250
Wire Wire Line
	9700 6250 1600 6250
Connection ~ 5650 6250
Wire Wire Line
	9200 3100 9200 1600
Wire Wire Line
	1700 1350 1700 1450
Connection ~ 1700 1350
Connection ~ 1700 1950
Wire Wire Line
	1700 7500 1700 1850
Connection ~ 1700 5250
Wire Wire Line
	9200 1650 9200 950 
Wire Wire Line
	3650 4950 3650 950 
Wire Wire Line
	3650 950  9200 950 
Wire Wire Line
	1550 2500 2400 2500
Wire Wire Line
	2900 2500 4900 2500
Connection ~ 1700 3000
Wire Wire Line
	8250 4550 9600 4550
Wire Wire Line
	9600 4550 9600 3100
Wire Wire Line
	9600 3100 8350 3100
Connection ~ 9200 3100
Wire Wire Line
	7850 2450 7300 2450
Wire Wire Line
	7600 1950 7600 1350
Wire Wire Line
	7600 1350 4650 1350
Wire Wire Line
	2400 2200 2300 2200
Wire Wire Line
	7300 2450 7300 1050
$Comp
L R R11
U 1 1 4C839BAA
P 2650 2200
F 0 "R11" V 2730 2200 50  0000 C C
F 1 "1k" V 2650 2200 50  0000 C C
	1    2650 2200
	0    1    1    0   
$EndComp
NoConn ~ 1600 4350
NoConn ~ 4850 3450
Text Notes 5850 4150 0    60   ~
"Eq ID"
Text Notes 10000 4750 0    60   ~
"DO0..7"
Text Notes 10000 3150 0    60   ~
"DI0..7"
Text Notes 10000 1600 0    60   ~
"-S0..7"
Text Notes 1000 1200 0    60   ~
"PS"
Text Notes 1000 2350 0    60   ~
"Busy"
Text Notes 1000 3200 0    60   ~
"Power"
Text Notes 1000 4050 0    60   ~
"LPT"
$Comp
L 74LS688 U4
U 1 1 4BF41A61
P 5800 2200
F 0 "U4" H 5800 3150 60  0000 C C
F 1 "74LS688" H 5800 1250 60  0000 C C
	1    5800 2200
	0    -1   -1   0   
$EndComp
$Comp
L NPN T1
U 1 1 4BF4373B
P 2100 2200
F 0 "T1" H 2250 2200 50  0000 C C
F 1 "BC182" H 2002 2350 50  0000 C C
	1    2100 2200
	-1   0    0    1   
$EndComp
$Comp
L R R1
U 1 1 4BF436B0
P 2650 2800
F 0 "R1" V 2730 2800 50  0000 C C
F 1 "330" V 2650 2800 50  0000 C C
	1    2650 2800
	0    1    1    0   
$EndComp
$Comp
L R R2
U 1 1 4BF436AB
P 2650 2500
F 0 "R2" V 2730 2500 50  0000 C C
F 1 "330" V 2650 2500 50  0000 C C
	1    2650 2500
	0    1    1    0   
$EndComp
$Comp
L DIODE D1
U 1 1 4BF435F3
P 1700 1650
F 0 "D1" H 1700 1750 40  0000 C C
F 1 "1N4001" H 1700 1550 40  0000 C C
	1    1700 1650
	0    -1   -1   0   
$EndComp
$Comp
L CONN_2 D2
U 1 1 4BF43599
P 1200 2900
F 0 "D2" V 1150 2900 40  0000 C C
F 1 "LED2" V 1250 2900 40  0000 C C
	1    1200 2900
	-1   0    0    -1  
$EndComp
$Comp
L CONN_2 D3
U 1 1 4BF43568
P 1200 2600
F 0 "D3" V 1150 2600 40  0000 C C
F 1 "LED1" V 1250 2600 40  0000 C C
	1    1200 2600
	-1   0    0    -1  
$EndComp
$Comp
L CONN_2 Cs2
U 1 1 4BF43554
P 1200 1450
F 0 "Cs2" V 1150 1450 40  0000 C C
F 1 "+5V" V 1250 1450 40  0000 C C
	1    1200 1450
	-1   0    0    -1  
$EndComp
$Comp
L CP C6
U 1 1 4BF434F7
P 2000 1650
F 0 "C6" H 2050 1750 50  0000 L C
F 1 "100u" H 2000 1500 50  0000 L C
	1    2000 1650
	1    0    0    -1  
$EndComp
$Comp
L C C1
U 1 1 4BF434EF
P 3250 1650
F 0 "C1" H 3300 1750 50  0000 L C
F 1 "33n" H 3300 1550 50  0000 L C
	1    3250 1650
	1    0    0    -1  
$EndComp
$Comp
L C C2
U 1 1 4BF434EA
P 3000 1650
F 0 "C2" H 3050 1750 50  0000 L C
F 1 "33n" H 3050 1550 50  0000 L C
	1    3000 1650
	1    0    0    -1  
$EndComp
$Comp
L C C3
U 1 1 4BF434E7
P 2750 1650
F 0 "C3" H 2800 1750 50  0000 L C
F 1 "33n" H 2800 1550 50  0000 L C
	1    2750 1650
	1    0    0    -1  
$EndComp
$Comp
L C C4
U 1 1 4BF434DF
P 2500 1650
F 0 "C4" H 2550 1750 50  0000 L C
F 1 "33n" H 2550 1550 50  0000 L C
	1    2500 1650
	1    0    0    -1  
$EndComp
$Comp
L C C5
U 1 1 4BF434DA
P 2250 1650
F 0 "C5" H 2300 1750 50  0000 L C
F 1 "33n" H 2300 1550 50  0000 L C
	1    2250 1650
	1    0    0    -1  
$EndComp
$Comp
L JUMPER J1
U 1 1 4BF432D6
P 6050 4850
F 0 "J1" H 5750 4900 60  0000 C C
F 1 "JUMPER" H 6050 4770 40  0001 C C
	1    6050 4850
	1    0    0    -1  
$EndComp
$Comp
L JUMPER J2
U 1 1 4BF432D2
P 6050 4700
F 0 "J2" H 5750 4750 60  0000 C C
F 1 "JUMPER" H 6050 4620 40  0001 C C
	1    6050 4700
	1    0    0    -1  
$EndComp
$Comp
L JUMPER J3
U 1 1 4BF432CD
P 6050 4550
F 0 "J3" H 5750 4600 60  0000 C C
F 1 "JUMPER" H 6050 4470 40  0001 C C
	1    6050 4550
	1    0    0    -1  
$EndComp
$Comp
L JUMPER J4
U 1 1 4BF432B0
P 6050 4400
F 0 "J4" H 5750 4450 60  0000 C C
F 1 "JUMPER" H 6050 4320 40  0001 C C
	1    6050 4400
	1    0    0    -1  
$EndComp
$Comp
L R R8
U 1 1 4BF4324A
P 8000 4850
F 0 "R8" V 7850 5100 50  0000 C C
F 1 "1k" V 8000 4850 50  0000 C C
	1    8000 4850
	0    1    1    0   
$EndComp
$Comp
L R R7
U 1 1 4BF43243
P 8000 4750
F 0 "R7" V 8050 5000 50  0000 C C
F 1 "1k" V 8000 4750 50  0000 C C
	1    8000 4750
	0    1    1    0   
$EndComp
$Comp
L R R9
U 1 1 4BF43236
P 8000 4650
F 0 "R9" V 7950 4900 50  0000 C C
F 1 "1k" V 8000 4650 50  0000 C C
	1    8000 4650
	0    1    1    0   
$EndComp
$Comp
L R R10
U 1 1 4BF43227
P 8000 4550
F 0 "R10" V 7950 4800 50  0000 C C
F 1 "1k" V 8000 4550 50  0000 C C
	1    8000 4550
	0    1    1    0   
$EndComp
NoConn ~ 1600 5050
$Comp
L GND #PWR01
U 1 1 4BF430E2
P 1700 7500
F 0 "#PWR01" H 1700 7500 30  0001 C C
F 1 "GND" H 1700 7430 30  0001 C C
	1    1700 7500
	1    0    0    -1  
$EndComp
$Comp
L R R3
U 1 1 4BF42FA6
P 8450 2950
F 0 "R3" V 8530 2950 50  0000 C C
F 1 "1k" V 8450 2950 50  0000 C C
	1    8450 2950
	0    1    1    0   
$EndComp
$Comp
L R R5
U 1 1 4BF42EB7
P 2750 3950
F 0 "R5" V 2700 4200 50  0000 C C
F 1 "1k" V 2750 3950 50  0000 C C
	1    2750 3950
	1    0    0    -1  
$EndComp
$Comp
L R R4
U 1 1 4BF42DE8
P 2450 3950
F 0 "R4" V 2400 4200 50  0000 C C
F 1 "1k" V 2450 3950 50  0000 C C
	1    2450 3950
	1    0    0    -1  
$EndComp
$Comp
L 74LS157 U5
U 1 1 4BF42252
P 8000 3800
F 0 "U5" H 8050 3950 60  0000 C C
F 1 "74LS157" H 8050 3650 60  0000 C C
	1    8000 3800
	-1   0    0    -1  
$EndComp
$Comp
L DB9 Cs3
U 1 1 4BF420E3
P 10250 2250
F 0 "Cs3" H 10250 2800 70  0000 C C
F 1 "DB9" H 10250 1700 70  0000 C C
	1    10250 2250
	1    0    0    1   
$EndComp
$Comp
L DB9 Cs4
U 1 1 4BF420DF
P 10250 3800
F 0 "Cs4" H 10250 4350 70  0000 C C
F 1 "DB9" H 10250 3250 70  0000 C C
	1    10250 3800
	1    0    0    1   
$EndComp
$Comp
L DB9 Cs5
U 1 1 4BF41F50
P 10250 5400
F 0 "Cs5" H 10250 5950 70  0000 C C
F 1 "DB9" H 10250 4850 70  0000 C C
	1    10250 5400
	1    0    0    1   
$EndComp
$Comp
L R R6
U 1 1 4BF41DAF
P 2600 3950
F 0 "R6" V 2550 4200 50  0000 C C
F 1 "1k" V 2600 3950 50  0000 C C
	1    2600 3950
	1    0    0    -1  
$EndComp
$Comp
L DB25 Cs1
U 1 1 4BF41B3C
P 1150 5550
F 0 "Cs1" H 1200 6900 70  0000 C C
F 1 "DB25" H 1100 4200 70  0000 C C
	1    1150 5550
	-1   0    0    1   
$EndComp
$Comp
L 74LS245 U1
U 1 1 4BF41A75
P 3650 5500
F 0 "U1" H 3750 6100 60  0000 L C
F 1 "74LS245" H 3750 4900 60  0000 L C
	1    3650 5500
	1    0    0    -1  
$EndComp
$Comp
L 74LS138 U3
U 1 1 4BF41A58
P 8450 2200
F 0 "U3" H 8550 2700 60  0000 C C
F 1 "74LS138" H 8600 1651 60  0000 C C
	1    8450 2200
	1    0    0    -1  
$EndComp
$Comp
L 74LS374 U2
U 1 1 4BF41A46
P 5050 4150
F 0 "U2" H 5050 4150 60  0000 C C
F 1 "74LS374" H 5100 3800 60  0000 C C
	1    5050 4150
	0    -1   -1   0   
$EndComp
$EndSCHEMATC