// This program creates a screen with two textboxes and a button. // When the user clicks the button, a label displays the result // which is the sum of the numbers in the two textboxes. // Modify the program to allow the user to click any // of three buttons. On displays the sum of the two numbers. // The others display the difference and product respectively. start Declarations Screen screen1 Button calcButton Textbox usersEntry1 Textbox usersEntry2 Label result screen1.setSize(200, 200) calcButton. setText("Click to sum the numbers you have entered") calcButton. registerListener(sumNumbers()) screen1.add(usersEntry1) screen1.add(usersEntry2) screen1.add(calcButton) stop sumNumbers() Declarations Label result num sum string answer sum = usersEntry1.getText() + usersEntry2.getText() answer = "The sum of the numbers is ", sum result. setText(answer) screen1.add(result) return

Design a pos circuit that displays the letters a through j on a seven-segment indicator. the circuit has four inputs w, x, y, and z which represent the last 4 bits of the uppercase ascii code for the letter to be displayed. thus, if wxyz = 0001 then "a" will be displayed. (any answer with 22 or fewer gates and inverters, not counting any for the inputs, is acceptable)

Fill in the following program so that it will correctly calculate the price of the orange juice the user is buying based on the buy one get one sale.#include //main functionint main() { int cartons; float price, total; //prompt user for input information printf("what is the cost of one container of oj in dollars? \n"); scanf(" [ select ] ["%d", "%c", "%f", "%lf"] ", & price); printf("how many containers are you buying? \n"); scanf(" [ select ] ["%d", "%c", "%f", "%lf"] ", & cartons); if ( [ select ] ["cartons / 2", "cartons % 1", "cartons % 2", "cartons % price", "cartons / price", "cartons / total"] [ select ] ["=", "==", "! =", "< =", "> =", "< "] 0) total = [ select ] ["price * cartons", "cartons * price / 2 + price", "(cartons / 2) * price", "cartons / (2.0 * price)", "(cartons / 2.0) * price + price", "((cartons / 2) * price) + price"] ; else total = ((cartons / 2) * price) + price; printf("the total cost is $%.2f.\n", total); return 0; }

Anetwork security application that prevents access between a private and trusted network and other untrusted networks