Resistor Color Coder
Resistor Color Coder is free, and is very useful for determining the color codes or values of 4 and 5 band resistors.To select the mode, click on the 4 or 5 band resistor icon in the upper right corner of the screen.The lefthand 3 or 4 bands determine resistor value, the righthand band resistor tolerance.
   Resistor Color Coder
Read more on Resistor Color Coder website
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