1. A personal-computer-motherboard memory-chip tester comprising: a motherboard, the motherboard being a main board for a computer using memory modules as a memory, the motherboard having a component side and a solder side, the component side having integrated circuits mounted thereon and expansion sockets for expansion boards;
a supporting plate, mounted to the motherboard for supporting the motherboard;
a chip test socket for receiving a memory chip for testing by the motherboard, the memory chip being removable from the chip test socket;
a test adapter board having the chip test socket mounted thereon, the test adapter board for transferring data from the motherboard to the memory chip inserted into the chip test socket, the motherboard using the memory chip inserted into the chip test socket as a portion of the memory of the motherboard;
additional memory chips mounted on the test adapter board, wherein the additional memory chips and the memory chip inserted into the chip test socket together form an emulated memory-module memory; and
adapter pins connected between the test adapter board and the motherboard, for electrically connecting the test adapter board to the motherboard,
whereby the memory chip inserted into the chip test socket on the test adapter board is tested by the motherboard accessing the emulated memory-module memory.