28129 Parallax Inc, 28129 Datasheet - Page 90

• Manufacturer Part Number: 28129
• Description: TEXT BASIC ANALOG & DIGITAL
• Manufacturer: Parallax Inc
• Type: Programmingr

Specifications of 28129

• Style: Book
• Title: Basic Analog and Digital
• Contents: Basic Analog and Digital Text
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Not applicable / Not applicable

Figure 4-6 shows the output. Try that with a hand held voltmeter and you’ll begin to see
the usefulness of combining the BASIC Stamp with analog interfaces. Imagine trying to
test all 4096 levels of a 12-bit DAC one at a time!
This is a very efficient way to collect your voltage sweep data. Looking at the data for the
voltage sweep brings several things to light. First, the voltage output for the D/A
converter is always a little high. Second, the error increases as the output voltage
Figure 4-6
Debug Terminal
Sample Output for
Program Listing 4.1,
Revision 3.