122-28176 Parallax Inc, 122-28176 Datasheet - Page 15

• 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

Note how each of the symbols is used.
A decision can take one of two forms:
Figure 1-2 Adjusting Shower Temperature Flowchart
•
•
•
•
•
A
Typically, an input/output symbol is used when bringing data or information into
the controller (in this case the person adjusting the temperature by sensing and
adjusting the water actuators).
The processing symbol is used when the controller is performing internal
processing of data or a task, such as waiting or calculations.
Finally, decision blocks are used to guide the flow of the procedure in one
direction or another based on the decision results.
Questions resulting in Yes or No.
Statements resulting in True or False.
Temperature
3 Seconds
Turn On
Turn On
Check
Start
Cold
Wait
Hot
No
No
Chapter 1: Process Control and Flowcharts · Page 5
Cold?
Hot?
Stop
Too
Too
Get
In
Yes
Yes
Turn Down
Turn Up
Hot
Hot
A
A