Industrial Electronic Engineers, Inc.
SIZE
A
CODE IDENT NO.
05464
SLB325-X4X0
Van Nuys, California
SCALE N/A
REV
B
SHEET 4
05/23/02
2.0
BLOCK DIAGRAM
LEVEL CONVERTERS
LCD CELL
ROW DRIVER
SHIFT REGISTER
SHIFT REGISTER
DEDICATED
ON-BOARD
MICROPROCESSOR
CONTROLLER
ON-BOARD
DC-TO-DC
VOLTAGE
CONVERTER
FOR LIQUID CRYSTAL
DISPLAY CELL
DRIVE VOLTAGES
DTR
CTS
TX
RX
EIA-232
RETURN
RX -
RX +
TX +
TX -
OR
EIA-422
11-29VDC
LEVEL CONVERTERS
COLUMN
LED ILLUMINATED
FO BACKLIGHT
FIGURE 1