Product life cycle
Every product has a life cycle. The life cycle of a product vary from months to various years. For example in the case of cameras photocopying machines etc. the life is more than 100 years. Whereas in the case of black and white, T.V/C.R. it was for few years only. Product life cycle is therefore a pattern of expenditure sale level revenue and profit over the period from latest idea generation to the deletion of product from product range.