:THIS FILE HAS SOME ERRORS which you can fix for experience: .IC1 =74LS04 $2.5X3.2Y14/16P.3WDSLo 4 8MHZ,3, IC1-3, 2 IC1-2,1 IC1-1,5 8MHZ 6 IC1-6,9 IC1-6,8 IC1-8, 11 IC1-8,10 IC1-10,13 IC1-10,12 DELAYEDCLK, 14 VCC,7 GND, .IC2 =PARTS-ON-HEADER $2.5X2.0Y16P.3WDSLo 15 IC1-1, 2 XTAL, 3 XTAL, 14 8MHZ, 13 8MHZ, 4 IC1-3, 5 IC1-3, 12 IC1-2, 11 IC1-2, 2 IC1-1, 6 IC1-1, .IC3 =7474 $.8X3.2Y14/16P.3WDSLo 3 8MHz, 2 4MHZ*, 6 4MHZ*, 5 4MHZ, 4 VCC, 1 VCC, 7 GND, 14 VCC, .IC4 = 74LS00 $.8X2.0Y14P.3WDSLo 1 DELAYEDCLK,2 4MHZ,3 PHASEA*, 5 DELAYEDCLK,4 4MHZ*,6 PHASEB*,7 GND,14 VCC, .J1 =CONNECTOR $5.5X4.0Y4P0WLSDo 1 VCC, 2 PHASEA*, 3 PHASEB*, 4 GND :End of error example: