page_title: Legacy system
hierarchical_section_title: Legacy system
caption_attribution_description: English: ATLANTIC OCEAN, (Jan. 29, 2011) Culinary Specialist 3rd Class John Smith uses the existing DOS-based food service management system aboard the aircraft carrier USS Harry S. Truman (CVN 75). The Office of Naval Research and Tech Solutions funded the creation of new modernized food service management software currently being piloted on several surface ships. Harry S. Truman is scheduled to receive the software in March. The new modular software design caters to each location's specific needs, provides menu planning tools, recipes and nutritional analysis, budget information and inventory tracking. (U.S. Navy photo by John F. Williams/Released)
context_page_description: In computing, a legacy system is an old method, technology, computer system, or application program, "of, relating to, or being a previous or outdated computer system," yet still in use. Often referencing a system as "legacy" means that it paved the way for the standards that would follow it. This can also imply that the system is out of date or in need of replacement.
context_section_description: In computing, a legacy system is an old method, technology, computer system, or application program, "of, relating to, or being a previous or outdated computer system," yet still in use. Often referencing a system as "legacy" means that it paved the way for the standards that would follow it. This can also imply that the system is out of date or in need of replacement.
caption: In 2011, MS-DOS was still used in some enterprises to run legacy applications, such as this US Navy food service management system.
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