Embodiments of the present invention relate to a control system and a control method for controlling memory modules. In the embodiments, the control system includes a central processing unit (CPU) and a plurality of memory modules, each of which includes a display unit and a micro control unit (MCU) configured to control the display unit. The CPU and the MCUs are connected through a bus, and the CPU instructs, according to a preset bus address, the MCUs to synchronously control the respective display units.