Patent ID: 7642801

Claim:
A circuit testing apparatus for testing a device under test, comprising: a function generator, providing a plurality of testing signals to the device under test according to a predetermined manner; a signal measuring module, coupled to the device under test and the function generator, which measures the device under test to obtain a plurality of measuring signals and generates a plurality of measuring results according to the plurality of testing signals and the plurality of measuring signals; a storage module, coupled to the signal measuring module, storing the plurality of measuring results; and a determining module, coupled to the signal measuring module and the storage module, determining the plurality of measuring results stored in the storage module to provide a testing result, wherein the predetermined manner includes sequentially assigning a first logic level and a second logic level to two voltage values from the device under test to generate the testing signals, and wherein the predetermined manner includes sequentially assigning a first logic level and a second logic level to every two neighboring voltage values outputted from the device under test, thereby obtaining every one of the testing signals.