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OCR: clock clock clock clock Vcc inA Vcc B&D A B&D A reset blank /13 blank blank blank blank in in reset blank logic blank out inD blank blank logic in outD Vcc Gna10 VcC Gnd10 clock pins timing inB in C10 reset reset out in B.C,D reset reset Gnd blank Gnd out C8 7490 7492 7412 7400 decade counter divide -by-12 monostable multivibrator quadruple NAND gate clockli4 Vcc14 2reset loqic ceset