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VCC 14

CNN3 U4A CNN2 CNN4 CNN1

VCC 14
CNN3 U4A CNN2 CNN4 CNN1
330R 7 74HC14
RS-232 RS-232.sch
U4D D10 U3D
VCC RxD TxD GND TL1 8
RxD TxD
9 74HC14
9 74HC14 14
TL1 TL1
CON2 GND
100nF
P 1.1 TxD RxD
J4 SP J3 SP U1 R2 10k J1 SP R3
GND 11 TL2
Y1 33pF 8MHz C8
10 74HC14
D12 U2F
TL2 TL2
TL4 RESET C10 10uF
330R C
R12 D5
P 3.0 RxD P 3.1 TxD P 3.2 INT0 P 3.3 INT1 P 3.4 T0 P 3.5 T1 P 3.7 RST
100nF 10k
GND 13 TL3
12 74HC14
74HC14
TL3 TL3
100nF GND
VCC P 1.3
R1 10k D1 KA206
VCC GND AT2051 X2 4
Q1 BC556 R7
330R 7 74HC14 GND
33pF DOT1
330R VCC AN1
220R TL1 TL1 TL2 TL2 TL3 TL3 GND GND
JP2 C6
13 P 1.4 74HC14
100nF 16 VCC-BCDdec
U6 JP3
OPT1 DISPLAY 2X7
330R 74HC14
11 P 1.6 74HC14
SEG-A SEG-B SEG-C SEG-D SEG-E SEG-F SEG-G DOT2
VCC VCC VCC VCC VCC GND GND GND
AN1 AN2 DOT1 DOT2 BCD-A BCD-B BCD-C BCD-D
SEG-A SEG-B SEG-C SEG-D SEG-E SEG-F SEG-G
R24- R31 8x220R
R22 R8
AN2 VCC
D347 (345) GND
Q2 BC556
D9 R16
D17 1N4148
D20 1N4148
1 2 POWER
D18 1N4148 D19 1N4148 C9 470uF
U5 L7805
C5 470uF
74HC14
Title
C1 100nF C2 100nF C3 100nF C4 100nF
ATMEL - KIT 2051
R35 4k7 R36 4k7 R34 4k7
Tx-232 Rx-232 GND
BC556
R37 4k7 D21 KA206 C14 1uF R33 4k7 D22 KA206 Q4 BC546