Computers and Technology, 18.04.2020 04:11, annaharmon693
An office building has two floors. A computer program is used to control an elevator that travels between the two floors. Physical sensors are used to set the following Boolean variables.
Variable 1: onFloor1 Description: Set to true if the elevator is stopped on floor 1; otherwise set to false
Variable 2: onFloor2 Description: Set to true if the elevator is stopped on floor 2; otherwise set to false
Variable 3: callTo1 Description: Set to true if the elevator is called to floor 1; otherwise set to false
Variable 4: callTo2 Description: Set to true if the elevator is called to floor 2; otherwise set to false
The elevator moves when the door is closed and the elevator is called to the floor that it is not currently on. Which of the following Boolean expressions can be used in a selection statement to cause the elevator to move?
A. (onFloor1 AND callTo2) AND (onFloor2 AND callTo1)
B. (onFloor1 AND callTo2) OR (onFloor2 AND callTo1)
C. (onFloor1 OR callTo2) AND (onFloor2 OR callTo1)
D. (onFloor1 OR callTo2) OR (onFloor2 OR callTo1)
Answers: 3
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