เปรียบเทียบวิธี

	การวางแผนความต้องการวัสดุ	SMED
สาขาวิชา	การจัดการการดำเนินงาน	การจัดการการดำเนินงาน
ตระกูล	Machine learning	Machine learning
ปีกำเนิด	1975	1985
ผู้ริเริ่ม	Joseph Orlicky	Shigeo Shingo
ประเภท	Material planning algorithm	Setup time reduction technique
แหล่งต้นตำรับ	Orlicky, J. (1975). Material requirements planning: The new way of life in production and inventory management. New York: McGraw-Hill.	Shingo, S. (1985). A revolution in manufacturing: The SMED system. Cambridge, MA: Productivity Press.
ชื่อเรียกอื่น	MRP, MRP I	quick changeover, rapid setup
ที่เกี่ยวข้อง	5	5
สรุป	Material Requirements Planning (MRP) is a computerized system developed by Joseph Orlicky in the 1970s that calculates material requirements based on master production schedules and bill-of-materials data. MRP determines what materials to buy, how much to order, and when to order them to meet production demand while minimizing inventory carrying costs. It became a foundational technology for manufacturing planning and later evolved into manufacturing resource planning (MRP II) and enterprise resource planning (ERP) systems.	Single Minute Exchange of Die (SMED) is a systematic approach developed by Shigeo Shingo in the 1980s to drastically reduce the time required to changeover equipment from producing one product to another. The methodology, part of the Toyota Production System, aims to reduce setup time to a single-digit minute range (ideally under nine minutes), enabling smaller batch sizes, faster response to customer demand, and improved flexibility in manufacturing. SMED is a cornerstone of lean manufacturing and just-in-time production.