関連ワード:  which type of memory is permanent    which type of memory is permanent in nature    which type of memory is permanent and non volatile    which type of memory is permanently installed on your computer    which type of memory is permanent and cannot be changed    which type of memory is permanently installed    which type of memory is permanent and cannot be modified    which type of memory is permanently stored    which type of memory is relatively permanent and unlimited    which type of memory is used for permanent storage