What is production planning and control?

What is production planning and control?
Production planning is where you decide what resources you need toproduce your product. For example: you are making a bicycle. Let'ssay that you need to make 500 bicycles next month. Naturally, youneed a building to store the materials and house the workers, butproduction planning usually assumes that you've already got that.Your production plan will include the 1000 tires and wheels thatyou'll need throughout the week (they can't all arrive on Friday,you need at least 200 of them by Monday) and the 500 frames, seats,etc. and the boxes to put them in. If it takes the supplier 14 daysto deliver the wheels and tires, then you need to order them twoweeks before you start production. Obviously there's a lot morelittle details than that, but that's the general idea.