Write a web application using php as server side scripting language. your web site sell three products which are laptop, printer and mobile phone. to simplify this application. assume each laptop is $200, printer is $100 and phone is $600.user can pay installment. the first installment will be charge today and other installment notice will send to user’s email address when they are due. the followings are the screen shots for several tests. note you mustreplace yourrealnameon the order form with your real name. your response to this order would be to calculate how much to charge to the user. the first payment is due today, and other payments if there are any will be due in the future. your application will calculate the total charge, today’s charge, number of remaining payments if there is any. send back the information with user’s names show correctly and email as the following.

What is the first step in creating a maintenance ?

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?

Aproject involves many computing systems working together on disjointed task towards a single goal what form of computing would the project be using