Protel 99 Schematic Circuit Diagram Download

		Design by Shiao I-Lin 2000 / 09 /18

Note :

• Don`t forget to power 74LS373 by Vcc +5V at pin20 & grand the pin10.
• If you still worry about "tie to Grand", just take the resister of 10K ohm for Pin6 & Pin35 between GND.

o : The red hollow node beside the DB25 just means that the sign be inversed.