28029 Parallax Inc, 28029 Datasheet - Page 44

• Manufacturer Part Number: 28029
• Description: KIT PARTS SMART SENSORS W/TEXT
• Manufacturer: Parallax Inc

Specifications of 28029

• Accessory Type: Parts Kit
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: BASIC Stamp® or Javelin Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
• Other names: 28029PAR

Page 32 · Smart Sensors and Applications
Figure 1-21: Shifting Text Through Window, Steps 3 and 4
Figure 1-22: Shifting Text Through Window, Steps 9 and 10
√
√
Figure 1-21 shows Steps 3 and 4. Moving the cursor to position 134 and
displaying characters 0 to 3, "Mess" is still the same sequence, but when the "M"
leaves the window, the sequence has to change. The cursor's starting point, or
head pointer, can no longer advance to the left; it has to stay at position 134.
Also, instead of displaying characters 0 to 3, characters 1 to 4, "essa", have to be
displayed.
The starting cursor position has to remain at 134 while the head and tail
characters continue to advance: 2 to 5 - "ssag", 3 to 6 - "sage". The window
keeps sliding, and Figure 1-22 shows the second-to-last step of characters 6 to 9
- "e" followed by three spaces, and finally the last step, 7 to 10 - four space
characters.