Explain what a Gantt chart is and how it is used.

A Gantt chart is a graphical representation of a program schedule. Developed by Henry L. Gantt, this method is the basis for the scheduling techniques used today, including elaborate computerized methods. The key to all scheduling techniques is to distinguish tasks that must be done sequentially from those that can be done concurrently. Scheduling tasks concurrently often reduces the total time required for a project. See Figure 2-10.