1	Educational Robotic Toys supply robotic systems to schools and through their shops in many locations throughout the country. Each shop has a computer connected to a central computer at the company's head office, which stores details of customers who have made orders. Each day, hundreds of orders can be made in the various shops. a. Suggest a suitable backing storage medium for holding the data. Give one reason for your answer. (1 point)

2	The central computer allows multi-access. (i). What is meant by the term multi-access. (2 points)

3	Why is a multi-access system required in this case? (1 point)

4	The box for each robot has a bar code. The last digit in the code is a check digit. (i). What is the purpose of a check digit? (1 point)

5	(ii). From what data is the check digit calculated? (1 point)

6	How would an invalid code be identified? (1 point)

7	The Data Processing manager has designed an order form that can be read by the computer system using optical character recognition (OCR). (i). Explain the term OCR. (1 point)

8	Give two advantages of using OCR. (2 points)

9	A shop that Educational Robotic Toys supply games to uses interactive processing to process all customer transactions. Give two advantages to the customer of interactive processing. (2 points)

10	Staff at Educational Robotic Toys all use smart cards. Which of the following statements are true about smart cards. (1 point per correct choice)
	The information on a smart card can be updated. Smart cards have their own processor. Smart cards are also known as mark sense cards. It is easy to forge smart cards.