Note that since the LM70 uses a "3-wire" variant of SPI, the SI/SO pin
is connected to both pin D7 (as Master Out) and Select (as Master In)
-using an arrangment that lets either the parport or the LM70 pull the
+using an arrangement that lets either the parport or the LM70 pull the
pin low. This can't be shared with true SPI devices, but other 3-wire
devices might share the same SI/SO pin.