![](https://csdnimg.cn/release/download_crawler_static/86600859/bg1.jpg)
1 2 3 4 5 6
A
B
C
D
654321
D
C
B
A
Title
Number RevisionSize
B
Date: 13-Jun-2008 Sheet of
File: E:\产品\小福星开发平台工程\小福星项目\福星电路原理图\实验板单元电路.ddbDrawn By:
1G^ VCC
1A1 2G^
2Y4 1Y1
1A2 2A4
2Y3 1Y2
1A3 2A3
2Y2 1Y3
1A4 2A2
2Y1 1Y4
GND 2A1
74LS244
p1.0 VCC
p1.1 p0.0
p1.2 p0.1
p1.3 p0.2
p1.4 p0.3
p1.5 p0.4
p1.6 p0.5
p1.7 p0.6
RST p0.7
p3.0 EA^
p3.1 ALE
p3.2 PSEN^
p3.3 p2.7
p3.4 p2.6
p3.5 p2.5
p3.6 p2.4
p3.7 p2.3
XTAL2 p2.2
XTAL1 p2.1
GND p2.0
AT89S51
12.000MHZ
10UF
30P30P
+5V
10K
200
RST
p3.1
K1
p3.2
K2
p3.3
K3
104104 104
10K 10K10K
+5V
560
560
560
560
560
560
560
a
bf
c
g
d
e
7
6
4
2
1
9
10
a
b
c
d
e
f
g
5
dp
dp
3
8
SM
J
F
SPEAKER
300Ω
VCC+9V
4007
J
+5V
LED
560
8050
10K
40
1
20
21
继电器输出控制电路
评论0