FIELD: electronics.
SUBSTANCE: invention relates to unit, comprising built-in central processing unit (CPU), and images forming device, using built-in central processor. Disclosed is image forming device. Device comprises main housing, which includes main controller for image forming device operations, replaceable unit, which is mounted on main housing for communication with main controller via serial interface, and customer replaceable unit module (CRUM) control chip, which is formed on replaceable unit. CRUM chip has memory unit, which stores initialization program, provided separately from operating system (OS), executed in main controller, replaceable unit unique information and status information relative to use of replaceable unit.
EFFECT: technical result is higher reliability of data stored in memory unit built-in into images forming device.
54 cl, 7 dwg, 1 tbl
