28128 Parallax Inc, 28128 Datasheet - Page 100
28128
Manufacturer Part Number
28128
Description
KIT BASIC ANALOG/DIGI PARTS ONLY
Manufacturer
Parallax Inc
Datasheet
1.28129.pdf
(176 pages)
Specifications of 28128
Accessory Type
ADC, DAC
Product
Microcontroller Accessories
For Use With/related Products
BASIC Stamp® 2 and Board of Education
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Parts Required
The same circuit used in Chapter #4, Figure 4-8 is used to begin this experiment. Later,
the LED circuit is replaced with a piezoelectric speaker circuit. For this experiment you'll
need the following parts:
(6) 2 k resistors
(3) 1 k resistors
(1) ADC0831 A/D Converter
(10) Jumper wires
(1) Piezoelectric speaker
Oscilloscope A device that measures and displays time-varying voltage signals.
oscilloscope is a common tool used by many electronics technicians and engineers to
display these signals. The signals of interest often repeat themselves many times each
second. The oscilloscope can be used to view the general shape of the signal, how fast it
repeats itself, and the maximum and minimum voltage values of the signal as it repeats itself
Frequency The rate at which a periodic time varying signal repeats itself. Frequency is
measured in repetitions per second.
frequency. One Hertz is one repetition per second, that is:
1 Hz = 1 repetition/second = 1/s
The name Hertz (Hz) is used when referring to
Figure 5-1
Oscilloscope
displaying a sine
wave output from
Program Listing
5.3.
The
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