When a connection device is connected to an SD socket of an electronic device, a process setting unit of the electronic device obtains permission/inhibition information (an output signal) set forth in a permission/inhibition information setting unit of the connection device. Based on the obtained permission/inhibition information, the process setting unit identifies an execution unit whose operation is to be activated among the execution units provided in the electronic device. Then, the process setting unit instructs the identified execution unit to start operation. This realizes operation of execution units in correspondence to the permission/inhibition information.