教室人数统计
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P3.0/RXD P3.1/TXD P3.2/INT0 P3.3/INT1
P3.4/T0 P3.5/T1 P3.6/WR P3.7/RD
39 P0.0 38 P0.1 37 P0.2 36 P0.3 35 P0.4 34 P0.5 33 P0.6 32 P0.7
21 P2.0 22 P2.1 23 P2.2 24 P2.3 25 P2.4 26 P2.5 27 P2.6 28 P2.7
18 17 P0.7 16 P0.6 15 P0.5 14 P0.4 13 P0.3 12 P0.2 11 P0.1 10 P0.0 9 P2.2 8 P2.1 7 P2.0 6
5 4 3 2 1
R3
10k
U1
R3
10k
P1.3 6 P1.4 5
7
SCL A0 SDA A1 WP
1 2
AT24C512
10 P3.0 11 P3.1 12 P3.2 13 P3.3 14 P3.4 15 P3.5 16 P3.6 17 P3.7
S1
P2.3
S2
P2.4
R1
1K
L1
RED
LCD1
AMPIRE128X64
PDF-XChange
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-Vout RST DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 E R/W RS V0 VCC GND CS2 CS1
1 2 3 4 5 6 7 8 9
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C2
22PF
C3
22PF
CR1
12M
IC1
19 XTAL1
18 XTAL2
RST 9 RST
S2
C1
10UF
29 30 31
PSEN ALE EA
RST
R2
10K
P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7
BAT1
1.5V
R3
10k
R4
10k
R5
10k
U2
8 1
VCC1 X1 VCC2
P1.0 5 P1.1 7 P1.2 6
RST SCLK I/O X2
DS1302
2
CR2
32.767K 3
C4
22PF
C5
22PF
om
1 2 3 Leabharlann Baidu 5 6 7 8
P1.0/T2 P1.1/T2EX P1.2 P1.3 P1.4 P1.5 P1.6 P1.7
89C51/52
RP1
1K
P0.0/AD0 P0.1/AD1 P0.2/AD2 P0.3/AD3 P0.4/AD4 P0.5/AD5 P0.6/AD6 P0.7/AD7
P2.0/A8 P2.1/A9 P2.2/A10 P2.3/A11 P2.4/A12 P2.5/A13 P2.6/A14 P2.7/A15
P3.4/T0 P3.5/T1 P3.6/WR P3.7/RD
39 P0.0 38 P0.1 37 P0.2 36 P0.3 35 P0.4 34 P0.5 33 P0.6 32 P0.7
21 P2.0 22 P2.1 23 P2.2 24 P2.3 25 P2.4 26 P2.5 27 P2.6 28 P2.7
18 17 P0.7 16 P0.6 15 P0.5 14 P0.4 13 P0.3 12 P0.2 11 P0.1 10 P0.0 9 P2.2 8 P2.1 7 P2.0 6
5 4 3 2 1
R3
10k
U1
R3
10k
P1.3 6 P1.4 5
7
SCL A0 SDA A1 WP
1 2
AT24C512
10 P3.0 11 P3.1 12 P3.2 13 P3.3 14 P3.4 15 P3.5 16 P3.6 17 P3.7
S1
P2.3
S2
P2.4
R1
1K
L1
RED
LCD1
AMPIRE128X64
PDF-XChange
! Click to buy NOW w.docu-track.c
-Vout RST DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 E R/W RS V0 VCC GND CS2 CS1
1 2 3 4 5 6 7 8 9
ww ww
PDF-XChange
! Click to buy NOW w.docu-track.c
om
C2
22PF
C3
22PF
CR1
12M
IC1
19 XTAL1
18 XTAL2
RST 9 RST
S2
C1
10UF
29 30 31
PSEN ALE EA
RST
R2
10K
P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7
BAT1
1.5V
R3
10k
R4
10k
R5
10k
U2
8 1
VCC1 X1 VCC2
P1.0 5 P1.1 7 P1.2 6
RST SCLK I/O X2
DS1302
2
CR2
32.767K 3
C4
22PF
C5
22PF
om
1 2 3 Leabharlann Baidu 5 6 7 8
P1.0/T2 P1.1/T2EX P1.2 P1.3 P1.4 P1.5 P1.6 P1.7
89C51/52
RP1
1K
P0.0/AD0 P0.1/AD1 P0.2/AD2 P0.3/AD3 P0.4/AD4 P0.5/AD5 P0.6/AD6 P0.7/AD7
P2.0/A8 P2.1/A9 P2.2/A10 P2.3/A11 P2.4/A12 P2.5/A13 P2.6/A14 P2.7/A15