The word “computer” has become associated with anything related to screens and keyboard. However, these are not the only parts that makes the computer function. The Central processing unit is often referred to as the brain of the computer which practically coordinates all the activities in the computer. Briefly describe the operation of the Central Processing Unit with emphasis on its sub components.

Which of the following has not been attributed at least in part to social media a. drug addiction b. depression c. kidnapping d. murder

Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?

Enzo’s balance sheet for the month of july is shown. enzo’s balance sheet (july 2013) assets liabilities cash $600 credit card $4,000 investments $500 student loan $2,500 house $120,000 mortgage $80,000 car $6,000 car loan $2,000 total $127,100 total $88,500 which expression finds enzo’s net worth?