YBD 868 digital integrated circuit tester* 1, power cord* 1, manual * 1 1. Device quality judgment: When the quality of the device under test is unknown, as long as the model of the device is input and the device is placed on the corresponding working socket, the instrument can determine whether the device is good or bad. 2. Device Model Discrimination: When the model of the device under test is unknown, simply input the number of pins of the device and place the device under test on the corresponding working socket. The instrument can immediately determine the model number of the device. 3. Device Substitution Query: Enter the part number to be queried and press the“Substitute Query” button to know if there are other devices with the same logic function. 4. Dynamic aging of the device: When the dynamic stability of the device under test is suspected, just enter the model number of the device and place the device under test on the corresponding locking socket. Press the“Dynamic Aging” button and the instrument can perform dynamic aging and continuous testing on the device., Manufacturer: BINGNU