28128 Parallax Inc, 28128 Datasheet - Page 169

• Manufacturer Part Number: 28128
• Description: KIT BASIC ANALOG/DIGI PARTS ONLY
• Manufacturer: Parallax Inc

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

Appendix B: Resistor Color Code
Resistor Color Code
Most common types of resistors have colored bands that indicate their value. The
resistors that we’re using in this series of experiments are typically “1/4 watt, carbon
film, with a 5% tolerance”. If you look closely at the sequence of bands you’ll notice that
one of the bands (on an end) is gold. This is band #4, & the gold color designates that it
has a 5% tolerance.
The resistor color code is an industry standard in recognizing the value of resistance of a
resistor. Each color band represents a number and the order of the color band will
represent a number value. The first two color bands indicate a number. The third color
band indicates the multiplier or in other words the number of zeros. The fourth band
indicates the tolerance of the resistor +/- 5, 10 or 20 %.
Color
black
brown
red
orange
yellow
green
blue
violet
gray
white
gold
silver
no color
1st Digit
3
7
9
0
1
2
4
5
6
8
2nd Digit
0
1
2
3
4
5
6
7
8
9
Multiplier
1,000,000,000
100,000.000
10,000,000
1,000,000
100,000
10,000
1,000
100
10
1
Tolerance
10%
20%
5%