URL：https://upload.wikimedia.org/wikipedia/commons/thumb/f/f9/US_Navy_110129-N-7676W-152_Culinary_Specialist_3rd_Class_John_Smith_uses_the_existing_DOS-based_food_service_management_system_aboard_the_aircraft.jpg/640px-US_Navy_110129-N-7676W-152_Culinary_Specialist_3rd_Class_John_Smith_uses_the_existing_DOS-based_food_service_management_system_aboard_the_aircraft.jpg
掲載元：https://ja.wikipedia.org/wiki/レガシーシステム
