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Kanban (Japanese: 看板 meaning signboard) is a scheduling system for lean manufacturing (also called just-in-time manufacturing, abbreviated JIT). [2] Taiichi Ohno, an industrial engineer at Toyota, developed kanban to improve manufacturing efficiency. [3] The system takes its name from the cards that track production within a factory.
The diagram here shows a software development workflow on a kanban board. [4]Kanban boards, designed for the context in which they are used, vary considerably and may show work item types ("features" and "user stories" here), columns delineating workflow activities, explicit policies, and swimlanes (rows crossing several columns, used for grouping user stories by feature here).
A kanban board in software development. Kanban can be used to organize many areas of an organization and can be designed accordingly. The simplest kanban board consists of three columns: "to-do", "doing" and "done", [3] though some additional detail such as WiP limits is needed to fully support the Kanban Method. [4]
The Feature is integrated and accepted then deployed. The "commitment point" is the "Feature Selected" column. The "delivery point" is the "Delivered" column. This board is similar to many kanban boards used in development but it is not a representation of any specific board. Specific similarities are coincidental.
Kanban systems combined with unique scheduling tools, dramatically reduces inventory levels, increases turns, enhances supplier/customer relationships and improves the accuracy of manufacturing schedules. Kanban aligns inventory levels with actual consumption; a signal is sent to produce and deliver a new shipment when material is consumed.
A burn down chart tracks work remaining over time while burn up charts like the CFD track the growth (or shrinkage) of work in certain states over time. In agile software development, when teams use kanban methodology, the cumulative flow diagram shows the number of active items in each column on a kanban board.
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Visual control methods aim to increase the efficiency and effectiveness of a process by making the steps in that process more visible. The theory behind visual control is that if something is clearly visible or in plain sight, it is easy to remember and keep at the forefront of the mind.