ELCOM Euro-2000T Alpha Service Manual page 6

1.3. Block diagrams
Real time
clock circuit
RS232C
interface for PC
RS232C
for scanner
and scales
RS485
interface for PC
Power voltage
checking
Paper end
sensor
External
PC keyboard
Display
Printer
Keyboard
Fiscal
memory
Real time
clock circuit
External
PC keyboard
Euro-2000T Alpha/1000T
MICROCONTROLLER
E-2000N
MICROCONTROLLER
E-2000N
Service manual
EPROM
256 kB
D 0 - D 7 8 bit data bus
20 bit address bus
A 0 - A 1 9
Display
Printer
Keyboard
Fiscal
memory
EPROM
256 kB
D 0 - D 7 8 bit data bus
A 0 - A 1 9 20 bit address bus
Power voltage
checking
Paper end
sensor
Interface
for PC
com. module
SRAM
128 (512) kB
SRAM
128 kB