This file is intended to be loaded by Logisim (http://www.cburch.com/logisim/).

1/G 1A1 1A2 1A3 1A4 1/Y1 1/Y2 1/Y3 1/Y4 2/Y1 2A4 2A2 2/Y2 2/Y4 2/Y3 2/G 2A1 2A3 74LS340