GEKCO DIGITAL CLOCK P/N CLK100 ASSEMBLY & OPERATION MANUAL
24
REV 1.1
GEKCO INC.
11.
Theory of Operation
11.1.
Block Diagram
MICROCONTROLLER
1 2 3 0 5 9
REAL TIME
CLOCK
HOURS
MINUTES
SECONDS
UTC/LOCAL
BUZZER
DISPLAY
DRIVER
MENU
PLUS
MINUS (OPTIONAL)
DISPLAY BOARD
MAIN BOARD
Figure 20: Block Diagram
The clock consists of two modules, the main board and the display board. The clock was designed this
way to allow the same main board to use different display boards which could vary in size.
If may be helpful to review the block diagram and schematics while reading the circuit descriptions.
