122-28176 Parallax Inc, 122-28176 Datasheet - Page 26

• Manufacturer Part Number: 122-28176
• Description: GUIDE STUDENT PROCESS CONTROL
• Manufacturer: Parallax Inc

Specifications of 122-28176

• Accessory Type: Manual
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: Propeller Education (PE) Kit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

Page 16 · Process Control
ACTIVITY #4: PREDEFINED PROCESSES WITH SUBROUTINES
Parts Required
Same as Activity #2
As more operations are added to the flowchart, it can become quite large and complex.
The same holds true for programs.
In the previous programs, all operations were
performed within the main routine, and the same held true in the flowchart.
As the process increases in size and complexity, it is best to break it down into more
manageable pieces. By looking at the main loop of the flowchart or the main routine of
the code, it is easy to see the overall operation of the program without being
overwhelmed by the amount of code. Finally, analyzing or troubleshooting is much
easier if it can be performed without having to flip between several pages or continually
scroll up or down to different sections of the program. For example, consider the
flowchart in Figure 1-9.
Looking at the main loop, it is easy to see the overall operation of the process. The pre-
defined processes take the place of specialized code to perform these operations. Each
pre-defined process has its own flowchart to define its operation. How will the process
operate based on this flowchart? What occurs if the light level is low?