Recreated AT&Y SPEC-MATE v2.01 Bill Of Materials R1 1x 1K 1/4W Resistor R2 1x 510R 1/4W Resistor R3 1x 10K 1/4W Resistor R4 1x 1K1 1/4W Resistor C1 1x 10u 25v Electrolytic Capacitor C2 1x 2u2 Electrolytic Capacitor U1 1x 74LS121 U2/4 2x 74LS32 U3/9 2x SN7425 U5 1x 74LS00 U6 1x 74LS20 U7 1x 74LS74 U8 1x 74LS04 U10 1x 2764 EPROM Q1 1x 2N2222A Transistor S1 1x Horizontal Tact Switch (Optional) S2 1x Right Angle Tact Switch P1 1x 28x2 Pin Spectrum Edge Connector with slot in pos. 5. *** www.ProjectSPECCY.com ***