User guide

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19
Designator Part Type
RV1 10K
RV2 47K
SW1 BCD-HOZ
SW2 BCD-HOZ
SW3 BCD-HOZ
SW4 SW-DIP4
TP1 TESTPOINT
TP2 TESTPOINT
TP3 TESTPOINT
U1 75176
U2 4052
U3 4052
U4 AL4002
U5 NE555
U6 ULN2803
U7 ULN2803
U8 HDSP4820 LED Pack
U9 HDSP4820 LED Pack
XTAL1 16MHz Crystal