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OCR: 330 CHM LED LOGIC PROBE CATHODE ANODE (-) PROBE (+) PROBE LED 330 OHM RESISTOR Light Emitting Diode LOGIC PROBE To put these simple testing aids together obtain the parts shown in the diagrams. You can use a single LED and resistor for both the logic probe and the continuity tester. These parts can be obtained from any local electronics store such as Radio Shack. The battery can be any battery that produces between 5 and 9 volts. A 9 volt transistor radio battery works fine for this. When using an LED always make sure that you have a resistor in line with it as shown in the diagram. Do not use the continuity tester when any of the ICs are in The Multi-Kickstart Board Project or when The Multi-Kickstart Board Project is installed in the computer. Do not use the logic probe when The Multi-Ki ...