Design a system for a book store that allows the owner to keep track of the store’s inventory and members. the store sells two types of products: books and cds. the store offers two types memberships to customers: regular memberships and premium memberships. the regular membership is free, while the premium members pay a fee every month. for this reason, the store keeps track of payment method and whether the fee is paid on time for the premium members. the system should keep track of the members and how much money each has spent at the store. the system also keeps track of the inventory of each product. inheritance: 1. member is extended by premium members. 2. product is sub-classes into books and cds.

What does 21 pilots middle aged name as a band 15 years prior to them naming their band 21 pilots?

What is the digital revolution and how did it change society? what are the benefits of digital media?

You need to design a circuit that implements the functions in the following table: s0 s1 function0 0 a + 10 1 a – b1 0 a + b1 1 a – 1s0 and s1 are 1-bit control inputs to select the function of the circuit. inputs a and b are 4-bitnumbers in 2s complement form. the output is also a 4-bit number in 2s complement form. you are allowed to use only one ttl 7483 4-bit adder to implement all the functions. but anynumber of other components (except the adder) can be used. hint: design a combinational logic circuit to modify the input b and the “carry input” of theadder depending on the control inputs s0 and s1.important: lab grade will depend on the working of the circuit & will be checked of by your labinstructor.1. is the output valid for the following input combinations: a. s0 = 0, s1 = 0, a = 7, b = 3? b. s0 = 0, s1 = 1, a = 7, b = 3? c. s0 = 1, s1 = 0, a = -4, b = -5? d. s0 = 1, s1 = 1, a = -8, b = 6? 2. what is the range of inputs (for both a and b) that will produce the valid output for all the functions?