Patent ID: 7908108

Claim:
A circuit testing apparatus for testing a device under test, wherein the device under test comprises a first output end and a second output end for respectively generating a first output signal and a second output signal and determining a test result of the device under test according the first output signal and the second output signal, comprising: a precision measure unit coupled to the device under test for providing a testing signal and receiving a signal calculated result according to the testing signal; a processing unit coupled to the first output end and the second output end of the device under test for generating a first processing signal and a second processing signal by processing the first output signal and the second output signal of the device under test according the testing signal; a calculating unit coupled to the processing unit for receiving the first processing signal and the second processing signal and generating the signal calculated result by calculating the first processing signal and the second processing signal; and a processor coupled to the precision measure unit for determining the test result of the device under test according the signal calculated result.