Part $1\mathrm{.}3$: Manual Simulation

To further understand how a discrete event simulation operates, a simple data structure will be employed to

execute a manual simulation as seen in Figure $1\mathrm{.}8.$ Our manual simulation will consist of a "system animation"

graphical representation of what is going on in the system with the current customer being serviced shown

inside the square and other customers waiting outside the square. The current simulation time $($i$.$e$.,$ called

"Time Now"$)$ will be shown. The current event will be identified, followed by a description of the process.

Finally, the "Event Calendar" will be maintained, consisting of the event time and typ and the entity ID

number.

Figure $1\mathrm{.}8$: Manual Simulation Data Structure

Step $1$: Algorithm Step $1$ of the simulation as defined in Figure $1\mathrm{.}5$ is used to "initialize" the system as

seen in executing structure of Figure $1\mathrm{.}9.$ Note, that we have inserted into the event calendar the time of

the first entity arrival and we have inserted the end event or the time to stop making observations.