Professor Smith computes grades as follows: He uses only the first digit (that is, 9 for averages between 90 and 99). He never has an average of 100. He gives a P (pass) to anyone with an average of 60 or above and an F to anyone with an average below 60. The inputs are w, x, y, and z.

Design a circuit using up to two of the decoders with active high outputs and an active low enable, one NOT gate, and one OR gate to produce an output of 1 if the student pass.

Pre-Lab:

1. Write the truth table and draw the chip layout for the 74LS138D IC.

Ehueveje did she did do dej e

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 !