1. A semiconductor device comprising: a memory device including various types of memory units configured to be installed in one slot; a host configured to store memory characteristic information of the various types of memory units contained in the memory device, process a signal for the memory units on the basis of the memory characteristic information, and transmit and receive the processed signal to and from the memory units; and an interface configured to allow the host to interface with the various types of memory units contained in the memory device.