When the time to produce a data item, P, is equal to the time to consume the data item, C, then buffer swapping with 2 buffers keeps both the consumer and the producer busy at all times. The numbers in the diagram indicate which buffer is being used. Producer 1 2 1 2 1 2Consumer 1 2 1 2 1 (a) If the time to consume is longer than the time to produce, then multiple concurrent consumers can be used to keep the producer busy at all times. Determine the number of concurrent consumers and the number of buffers needed when C = 2P and show the corresponding timing diagram. (b) Determine the number of consumers necessary to keep the producer busy for the general case when C is a multiple of P. (c) Determine the number of consumers necessary to keep the producer busy when C is less than P.

Through the process of sedimentation,sediment is turned back to rock to form sedimentation.the process of sedimentation is: > deposition-where fragments were deposited into the river or sea under gravity or travelling agent such as wind or water. > sedimentation-the fragments deposited in the river sedimented and accumulate> compaction-the layers of fragments deposited undergoes compaction due to the weight if the upper layers> cementation-chemical substance of the fragments such as cement dissolved into the water and cement the other fragments together to form sedimentary rock.thus,cementation and compaction are the process.on the other hand, transformation only occur when a rock under goes metamorphism(compaction or extreme heat).while recrystillization occurs when a rock is melted and cooled down,which also requires metamorphism to take place.hope it !

Idont under stand dat > > > > >