Draw a sequence diagram for online shopping in a retail store. If the customer is using the website for the first time to order he/she needs to register. After login a customer can select the items and view their details. The items can be added to the shopping cart one by one. The order will be placed at the end. Once the customer wishes to place the order the system will be requesting to enter the credit card details to finalize the payment. The card details are verified from the bank. On receiving the verification of the payment the order of the customer is acknowledged and shipped.

QUESTION 4 Read the following description and answers the following questions. An elevator control system shall allow a passenger to call the elevator and to select the destination floor. When a passenger pushes the external button (to call the elevator), or the internal button (to select the destination floor), the central control system switches the button light on. When a passenger calls the elevator or selects the destination floor, the central control system opens/closes the elevator door. When a passenger calls the elevator or selects the destination floor, the central control system moves/stops the elevator to/at the passenger call floor or tolat the passenger destination floor. When a passenger leaves the elevator, the central control system switches the button light off. i) Identify FOUR objects from the above description. ii) Create a statechart (or state) diagram for the elevator object.

Slicers appears as their own box that can be positioned anywhere on the worksheet. True False

Microprogrammed control is used in computers, and it is the microprogram that determines the computer's set of instructions. Questioning whether or not a claim is true.