digital clock.pdf

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GND
GND
IC6
A
B
C
D
E
F
G
10
12
13
9
11
6
7
5
4
14
10
9
8
5
4
2
3
a
b
c
d
e
f
g
GND
GND
GND
GND
GND
C
C
R6
100
clock
1
2
3
15
CLK
DP
7
clock
1
2
3
15
CLK
A
B
C
D
E
F
G
DP
7
DP
7
clock
1
2
3
15
CLK
VCC
CI
CO
DEI DEO
RES UCS
LA-401BN
VCC
CI
CO
DEI DEO
RES UCS
5
4
14
LA-401BN
VCC
2
3
15
4026N
GND
GND
4026N
GND
4026N
VCC
VCC
4026N
GND
1n4007
D1
4026N
GND
GND
4026N
V+
R16
1k
3
2
1
CI
CO
DEI DEO
RES UCS
5
4
14
LA-401BN
DP
7
clock
1
2
3
15
CLK
DP
7
GND
a
b
c
d
e
f
g
C
C
R4
100
clock
100
1
CLK
A
B
C
D
E
F
G
a
b
c
d
e
f
g
C
C
R2
100
A
B
C
D
E
F
G
a
b
c
d
e
f
g
C
C
R3
100
C2
LED6
IC4
1
6
10
12
13
9
11
6
7
10
9
8
5
4
2
3
LED4
1
6
A
B
C
D
E
F
G
10
12
13
9
11
6
7
10
9
8
5
4
2
3
a
b
c
d
e
f
g
C
C
1
6
R1
IC2
10
12
13
9
11
6
7
5
4
14
10
9
8
5
4
2
3
LED2
IC3
1
6
10
12
13
9
11
6
7
5
4
14
10
9
8
5
4
2
3
LED3
1
6
clock
DP
7
1
2
3
15
CLK
A
B
C
D
E
F
G
10
12
13
9
11
6
7
5
4
14
10
9
8
5
4
2
3
a
b
c
d
e
f
g
C
C
1
6
R5
100
0.01uf
IC1
LED1
IC5
LED5
IC8
2
TR
R
5
1
CV
GND
Q
DIS
THR
V+
3
7
6
8
55NF
4
CI
CO
DEI DEO
RES UCS
LA-401BN
CI
CO
DEI DEO
RES UCS
LA-401BN
VCC
CI
CO
DEI DEO
RES UCS
LA-401BN
NE555N
100k
R17
12
6
1N4007
8
74ALS11N
74ALS11N
IC7A
IC7B
S2
VCC
3
4
1
2
S1
VCC
3
4
1
2
3
4
5
R19
R18
R15
R14
R13
R12
R11
R10
470
470
1k
GND
GND
31-01-2018 10:57 f=0.80 F:\Editing video\digital clock\BLOG\4026 digital clock.sch (Sheet: 1/1)
1k
R9
R8
470
R7
470
470
1
2
13
9
10
11
74ALS11N
IC7C
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