List of components : R1 = 4K7 R2 = 100 ohm C1 = 104 Capasitor C2 = 104 Capasitor C3 = 10uf/35v Tantalum C4 = 10uf/35v Tantalum C5 = 10uF/35v Tantalum C6 = 10uF/35v Tantalum RP1 = Resistor Network-SIP 101G = 100 ohm RP2 = Resistor Network-SIP 101G = 100 ohm RP3 = Resistor Network-SIP 101G = 100 ohm RP4 = Resistor Network-SIP 101G = 100 ohm RP5 = Resistor Network-SIP 103G = 10K ohm U1 = HD-74LS244P U2 = HD-74LS14P