"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
|7944042||Semiconductor device and method of manufacturing same|
A semiconductor device includes an outer resin case having a peripheral wall and terminal mounting holes formed in the peripheral wall, and a layer assembly provided in the outer resin case. The layer assembly includes a semiconductor chip, an insulating circuit boa...
|5327297||Read/write amplifier circuit for magnetic disk unit|
A read/write amplifier provides a magnetic disk unit capable of reducing variations of the bias voltage. An output stage provides a DC bias circuit for the read signal and a circuit for producing a high impedance for the read signal. A switch circuit is i...