Patent ID: 7872484

Claim:
A test apparatus, comprising: a printed circuit board; a chip carrier socket mounted on the printed circuit board and defining a space to receive a chip comprising a plurality of pins, wherein the chip carrier socket comprises a plurality of contact terminals corresponding to the pins of the chip, and a ground portion being grounded via the printed circuit board; and a display circuit mounted on the printed circuit board, the display circuit for indicating the results of a chip test conducted by the apparatus, wherein the display circuit comprises: a power supply comprising a power terminal and a ground terminal; and a plurality of light-emitting elements, wherein each light-emitting element is connected between the power terminal of the power supply and a corresponding contact terminal; wherein the ground portion contacts a portion of each pin of the chip, when the chip is received in the space; wherein when the chip is received in the space, if a corresponding contact terminal contacts a distal end of the pin grounded via the grounded portion, a light-emitting element connected to the contact terminal and corresponding to the tested pin lights up; and wherein when the chip is received in the space, if a distal end of a pin cannot contact a corresponding contact terminal to ground the corresponding contact terminal through the grounded portion, a light-emitting element connected to the corresponding contact terminal does not light up.