Logic testers are simple but very helpful devices in testing digital circuits. A logic probe can be designed in many different ways. In this particular design, a combination of discrete and TTL logic ...

Learn how to use a logic probe to check the operation of digital circuits and troubleshoot some common faults. This article explains what a logic probe is, how to use it, and how to avoid errors.

A logic probe is a handheld pen-like probe used for analysing and troubleshooting the logical states ‘0’ or ‘1’ of a digital circuit. While most logic probes are powered by the circuit under test, ...