Patent ID: 7668028

Claim:
A dual in-line memory module (DIMM) for use in a test, comprising: a memory array with a plurality of memories, each of which includes a plurality of first data input/output pads and a plurality of second data input/output pads; a test signal input/output unit provided in the respective memories to perform an input/output operation of a test signal with an external test mode controller for a test mode operation by using the plurality of second data input/output pads; and a normal data input/output unit provided in the respective memories to perform an input/output operation of a normal data with an external memory controller for a normal mode operation by using the plurality of first data input/output pads, wherein the first data input/output pads are used by the normal data input/output unit and the second data input/output pads are used by the test signal input/output unit, and the first data input/output pads are not shared with the second data input/output pads.