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CKA 1 CKB 4 MR 2 Q0 3 Q1 5 Q2 6 Q3 7 U1:A 74LS390 A 7 QA 13 B 1 QB 12 C 2 QC 11 D 6 QD 10 BI/RBO 4 QE 9 RBI 5 QF 15 LT 3 QG 14 U2 74LS48 CKA 15 CKB 12 MR 14 Q0 13 Q1 11 Q2 10 Q3 9 U1:B 74LS390 A 7 QA 13 B 1 QB 12 C 2 QC 11 D 6 QD 10 BI/RBO 4 QE 9 RBI 5 QF 15 LT 3 QG 14 U3 74LS48 CKA 1 CKB 4 MR 2 Q0 3 Q1 5 Q2 6 Q3 7 U4:A 74LS390 A 7 QA 13 B 1 QB 12 C 2 QC 11 D 6 QD 10 BI/RBO 4 QE 9 RBI 5 QF 15 LT 3 QG 14 U5 74LS48 CKA 15 CKB 12 MR 14 Q0 13 Q1 11 Q2 10 Q3 9 U4:B 74LS390 A 7 QA 13 B 1 QB 12 C 2 QC 11 D 6 QD 10 BI/RBO 4 QE 9 RBI 5 QF 15 LT 3 QG 14 U6 74LS48 CKA 1 CKB 4 MR 2 Q0 3 Q1 5 Q2 6 Q3 7 U7:A 74LS390 A 7 QA 13 B 1 QB 12 C 2 QC 11 D 6 QD 10 BI/RBO 4 QE 9 RBI 5 QF 15 LT 3 QG 14 U8 74LS48 CKA 15 CKB 12 MR 14 Q0 13 Q1 11 Q2 10 Q3 9 U7:B 74LS390 A 7 QA 13 B 1 QB 12 C 2 QC 11 D 6 QD 10 BI/RBO 4 QE 9 RBI 5 QF 15 LT 3 QG 14 U9 74LS48 1 2 3 U10:A 74LS08 4 5 6 U10:B 74LS08 9 10 8 U10:C 74LS08

digital clock circuit

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  • CKA1CKB4

    MR2

    Q0 3Q1 5Q2 6Q3 7

    U1:A

    74LS390

    A7 QA 13B1 QB 12C2 QC 11D6 QD 10BI/RBO4 QE 9RBI5 QF 15LT3 QG 14

    U2

    74LS48

    CKA15CKB12

    MR14

    Q0 13Q1 11Q2 10Q3 9

    U1:B

    74LS390

    A7 QA 13B1 QB 12C2 QC 11D6 QD 10BI/RBO4 QE 9RBI5 QF 15LT3 QG 14

    U3

    74LS48

    CKA1CKB4

    MR2

    Q0 3Q1 5Q2 6Q3 7

    U4:A

    74LS390

    A7 QA 13B1 QB 12C2 QC 11D6 QD 10BI/RBO4 QE 9RBI5 QF 15LT3 QG 14

    U5

    74LS48

    CKA15CKB12

    MR14

    Q0 13Q1 11Q2 10Q3 9

    U4:B

    74LS390

    A7 QA 13B1 QB 12C2 QC 11D6 QD 10BI/RBO4 QE 9RBI5 QF 15LT3 QG 14

    U6

    74LS48

    CKA1CKB4

    MR2

    Q0 3Q1 5Q2 6Q3 7

    U7:A

    74LS390

    A7 QA 13B1 QB 12C2 QC 11D6 QD 10BI/RBO4 QE 9RBI5 QF 15LT3 QG 14

    U8

    74LS48

    CKA15CKB12

    MR14

    Q0 13Q1 11Q2 10Q3 9

    U7:B

    74LS390

    A7 QA 13B1 QB 12C2 QC 11D6 QD 10BI/RBO4 QE 9RBI5 QF 15LT3 QG 14

    U9

    74LS48

    123

    U10:A74LS08

    456

    U10:B74LS08

    9

    108

    U10:C

    74LS08