A simulation is a computer model of a part of a real-world system. There are many reasons to build a simulation, but a good design must start with an understanding of what questions you hope the simulation will answer. As a starting point, examine this problem:
You have been asked to simulate the alarm system for a house. The house is a center-hall colonial with four bedrooms, a finished basement, and an under-the-house garage. The downstairs has the following windows: three in the kitchen, four in the dining room, one in the half-bathroom, two each in the living room and the family room, and two small windows next to the front door. All four bedrooms are upstairs; each bedroom has two windows except for the master bedroom, which has four. There are two baths, each with one window. Finally, there are four half-windows in the base-ment and one window in the garage.
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| Home Alarm Sensor Simulation |
Normal access to the house is through the front door. In addition, the kitchen has a sliding glass door, and the garage has two doors for the cars and one door for easy access to the basement. There is also a cellar door in the backyard. All the windows and doors are alarmed, and there is a panic button on each phone and one next to the bed in the master bedroom. The grounds are alarmed, as well, although these alarms are carefully calibrated so that they are not set off by small animals or birds.
A central alarm system in the basement sounds a warning chirp when the alarm has been tripped. If the alarm is not disabled within a set amount of time, the police are called. If a panic button is pushed, the police are called immediately. The alarm is also wired into the fire and smoke detectors and the sprinkler system. The alarm system itself is fault tolerant, has its own internal backup power supply, and is encased in a fireproof box.
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