Appendices
Version 4 A-26 4/2/04
FIGURE 7 – DISPLAY BOARD
FIGURE 7-A – DISPLAY BOARD SCHEMATIC
P3 - 14
P3 - 4
P3 - 4
P3 - 5
P3 - 26
P3 - 25
DATA LED
D KEY LED
SYS LED
A KEY LED
U1
U1
U1
U1
U1
1 2 9 8
3
4 11 10
R4
330 Ω
R2
330 Ω
R7
330 Ω
R1
330 Ω
R3
330 Ω
DATA
DKEY
SYS
AKEY
POWER
+5V
GND
U1 P14
C5 0.1µF
U1 P7
