| 摘要 |
The tester tests the connection or logical operation states of the electronic parts with a display as well as an audio sound. The tester includes a logic level discriminator (1) for classfying the testing logic device to TTL or CMOS one, a resistance discriminator (2) for measuring the resistance of the testing device, a test mode selection switch (SWA) for selecting the test mode from the resistance or logical device mode, a lamp circuit (5) for turning on or off the lamp according to the pulse provided from a pulse input detection circuit (4), and a oscillation control circuit (6) for providing the audio sound when the testing device is faulty.
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