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IC 74LS03 Quad 2-Input NAND Gates Open-Collector Outputs 7403
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BC547 NPN Transistor BJT
ON-OFF big Switch 2Pins KCD1
Transistor S8550 -PNP
IRF540 N-Channel MOSFET Transistor 20A
Ceramic Capacitor 20 pico Farad 0.02nF (200)
TL071operational amplifier op-ampTL071
IC 74LS90 decade counter 4-bit counter 7490 






