1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
DD
CC
BB
AA
Title
NumberRevisionSize
A3
Date:2011-3-21Sheet of
File:H:\ 工作文档\..\交通灯原理图（LED灯+数码管）.SCHDOCDrawn By:
K
1
f
2
g
3
e
4
d
5
K
6
c
8
DP
7
b
9
a
10
DS1
Dpy Red-CC
K
1
f
2
g
3
e
4
d
5
K
6
c
8
DP
7
b
9
a
10
DS2
Dpy Red-CC
K
1
f
2
g
3
e
4
d
5
K
6
c
8
DP
7
b
9
a
10
DS3
Dpy Red-CC
K
1
f
2
g
3
e
4
d
5
K
6
c
8
DP
7
b
9
a
10
DS4
Dpy Red-CC
K
1
f
2
g
3
e
4
d
5
K
6
c
8
DP
7
b
9
a
10
DS5
Dpy Red-CC
K
1
f
2
g
3
e
4
d
5
K
6
c
8
DP
7
b
9
a
10
DS6
Dpy Red-CC
K
1
f
2
g
3
e
4
d
5
K
6
c
8
DP
7
b
9
a
10
DS7
Dpy Red-CC
K
1
f
2
g
3
e
4
d
5
K
6
c
8
DP
7
b
9
a
10
DS8
Dpy Red-CC
A
B
C
D
E
F
G
Dp
A
B
C
D
E
F
G
Dp
A
B
C
D
E
F
G
Dp
A
B
C
D
E
F
G
Dp
A
B
C
D
E
F
G
Dp
A
B
C
D
E
F
G
Dp
A
B
C
D
E
F
G
Dp
A
B
C
D
E
F
G
Dp
P1.0/T2
1
P1.1/T2EX
2
P1.2
3
P1.3
4
P1.4
5
P1.5
6
P1.6
7
P1.7
8
RST
9
P3.0/RxD
10
P3.1/TxD
11
P3.2/INT0
12
P3.3/INT1
13
P3.4/T0
14
P3.5/T1
15
P3.6/WR
16
P3.7/RD
17
XTAL2
18
XTAL1
19
VSS
20
P2.0/A8
21
P2.1/A9
22
P2.2/A10
23
P2.3/A11
24
P2.4/A12
25
P2.5/A13
26
P2.6/A14
27
P2.7/A15
28
PSEN
29
ALE
30
EA/VPP
31
P0.7/AD7
32
P0.6/AD6
33
P0.5/AD5
34
P0.4/AD4
35
P0.3/AD3
36
P0.2/AD2
37
P0.1/AD1
38
P0.0/AD0
39
VCC
40
U1
STC89C52
30pF
C1
30pF
C2
Y1
12M
C310uF/16V
10KR3
1KR2
K1
1
2
3
4
5
6
7
8
9
R1
Rp8
L3
L5
L1 330RR5
330RR7
330RR9
+5V
L9
L11
L7 330RR11
330RR13
330RR15
+5V
OE
19
T/R
1
A1
3
B1
17
A2
4
B2
16
A3
5
B3
15
A4
6
B4
14
A5
7
B5
13
A6
8
B6
12
A7
9
B7
11
A0
2
B0
18
VCC
20
GND
10
U2
DM74LS245N
+5V
D0
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
D4
D5
D6
D7
+5V
D0
D1
D2
D3
D4
D5
D6
D7
+5V
A
B
C
D
E
F
G
Dp
S_N_1
S_N_2
E_W_1
E_W_2
E_W_1
S_N_1
S_N_1
S_N_2
S_N_2
E_W_1
E_W_2
E_W_2+5V
+5V
E_W_R
E_W_Y
E_W_G
S_N_R
S_N_Y
S_N_G
K2
清零
10K
R4
+5V
S_N_R
S_N_Y
S_N_G
E_W_G
E_W_Y
E_W_R
L4
L6
L2 330RR6
330RR8
330RR10
+5V
L10
L12
L8 330RR12
330RR14
330RR16
+5V
S_N_R
S_N_Y
S_N_G
E_W_G
E_W_Y
E_W_R
S1
开关
+5V
1
2
P1
Power
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