ABC Ice Cream Parlor
The System:
ABC is a small but well-known ice cream parlor. It has a single counter, for
which there are currently two workers responsible for taking the customers’ orders,
preparing the orders, all the way until the payment procedure. It opens daily from 11:00
in the morning to 10:00 in the evening. The layout of ABC is shown below.
Figure 1. Layout of ABC
The entire process is described in Figure 2. Customers are served in a FIFO
manner.
Figure 2. Process flowchart of ABC
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SIMSYST: ABC Ice Cream Parlor
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Customer interarrival time, time to take the orders, time to prepare the orders and time to
get the payment are all considered to be random parameters. A systems analyst had
gathered data for all these parameters and identified their corresponding probability
distributions. These are presented from Table 1 to Table 4.
Table 1
Distribution of Time Between Arrivals
Time Between Arrivals
Probability
( Mins. )
3
0.100
4
0.200
5
0.500
6
0.200
Table 2
Distribution of Order-Taking
Order-Taking
Probability
( Mins. )
1
0.200
2
0.200
3
0.200
4
0.200
5
0.200
Table 3
Distribution of Preparation Time
Preparation Time
Probability
( Mins. )
3
0.125
4
0.250
5
0.250
6
0.125
7
0.125
8
0.125
Table 4
Distribution of Payment Time
Payment ( Mins. )
Probability
1
0.20
2
0.20
3
0.40
4
0.20
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SIMSYST: ABC Ice Cream Parlor
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Minimum Requirements:
1. Simulate the given system above for a length of one day.
2. State all necessary assumptions relevant to your simulation.
3. Name the entities, attributes, activities, events and state variables for your simulation
study.
4. Make use of at least two performance measures for your simulation.
5. Give insights regarding the system behavior. Support these insights with graphs.
6. Choose at least a pair of state variable and performance measure and describe as well
as show their relationship.
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SIMSYST: ABC Ice Cream Parlor
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