In many supermarkets customers can pay for their shopping using credit cards. (a) Name two items of information stored on the magnetic stripe on these cards. (b) State two ways that the supermarket computer would check the credit card.

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)

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

Jackson, who works in the finance department of a company, is holding a seminar for other employees on how to file taxes. only three employees sign up to attend the seminar. which device can he use to share his presentation with a group of three employees?