Question 16 The _unit of the central processing unit (CPU) performs mathematical calculations and makes logical comparisons Question 17 Which of the following is NOT an example of a common use of a point-of-sale (POS) device? A server in a restaurant uses a POS to communicate a diner's order to the kitchen. O Anurse in a hospital uses a POS to enter a patient's vital signs into his records. O A barrista in a coffee store uses a POS to record a sale of some bakery items. O Ateller in a bank uses a POS to withdraw money for a customer