Cash processing system

A cash processing system, comprising:

• a cash processing machine configured to execute a plurality of types of cash processing;
• and
• a server to be connected to the cash processing machine via a network, wherein:
• the server comprises
• a computer configured to provide at least one of a plurality of extended function programs for executing the plurality of types of cash processing in accordance with a download request from the cash processing machine, and
• the cash processing machine comprises:
• a first storage configured to store a basic function program for executing basic processing commonly needed to execute the plurality of types of cash processing;
• a second storage configured to stores the extended function program;
• and
• a circuitry configured to execute the basic function program and the extended function program, wherein
• the circuitry is configured to download the extended function program corresponding to the cash processing included in a processing request from the server upon reception of the processing request designating execution of any one of the plurality of types of cash processing, to store the extended function program in the second storage, and to execute the cash processing included in the processing request by executing both the basic function program and the extended function program.