28129 Parallax Inc, 28129 Datasheet - Page 13

• 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

Analog and Digital Parts Kit to the Board of Education based on its circuit symbol in a
schematic.
Figure 1-1 shows the circuit symbol for an LED on the left and a drawing of an LED
from the parts kit on the right. It also shows how the pins on an LED correspond to the
terminals on the circuit symbol.
Figure 1-2 shows a drawing of a resistor below its circuit symbol. The circuit symbol
typically has the resistance value written below or next to it. The colored stripes on the
part drawn below the symbol indicate its value, which is measured in ohms. The omega
symbol ( ) is used to denote the ohm. You can use Appendix B to convert the color
codes on the resistor to resistance values.
Circuit Schematic: Often referred to as a schematic, a circuit schematic is a map that uses
symbols to show the components in a circuit and how they are connected. The components
are represented by symbols such as the one that represents the LED in Figure 1-1.
Flat spot on
plastic part of
LED indicating
the cathode.
470
Ω
_
LED
+
Figure 1-2
Resistor Circuit Symbol
and Corresponding
Component
Figure 1-1
LED Circuit Symbol
Compared to the
Component