8.4.3 Circuit board (example)
Shift register, type 74HC595 – Number of selected classes = 10.
The bit matching the class changes from 0 to 1.
Transmission format
RJ124350 00000000 00000000 00000000 00000000 00000000
RJ124356 78900000 00000000 00000000 00000000 00000000
RJ124356 78901234 56789000 00000000 00000000 00000000
RJ124356 78901234 56789012 34567890 12345678 90000000
5 10 20 40
Nb classes
5
10
20
40
bit 48 bit 1
RJ1234567890000000000000000000000000000000000000
SCK
RCK
SER
SCLR
Q'
74HC595
G
SCK
SER
Strobe
Clock
DATA
Vcc
LSB
H
Q
A
Q
H
RCK
SCLR
Q
H
MSB
74HC595
Q'
H
Q
A
G
RESET
RJ123456
78910
ULN 2803
ULN 2803
22
Bit 48
sent
Bit 1
sent