Serial PC Link or Program-Link

The Casio fx-9750G has the Program-Link facility, which allows the calculator to connect with other Casio calculators, printer, and a personal computer. This facility involves making an electrical connection with the 2.5 mm stereo jack socket for serial data communications.

To connect two calculators together you need the SB-62 cable. This cable has 2.5 mm stereo plugs at each end. This is a crossover cable where the transmit pin connects with the receive pin.

To connect the calculator to the PC you will need the FA-122 interface unit. The Casio Serial Cable article shows the construction of such a cable for RS232 communication.

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