Input/output control device

Abstract

Abstract PURPOSE:To obtain an input/output control device which does not require a load pulse signal and a shift pulse signal, by applying phase modulation to a signal between an input/output controlling circuit and an input/output circuit, and demodulating it. CONSTITUTION:An input/output controlling circuit 302 is constituted of a shift register 304 for setting an output data of a computer 101, a moudlating circuit 305, a demodulating circuit 308 and a data register 307. An input/output circuit 303 extracts a shift pulse signal 312 by a demodulating circuit 310 from an input signal 306 out of the input/output controlling circuit 302, and generates a load pulse signal 313 by a counter 311. The input/output circuit 303 sets the input signal 306 to a shift register 315 by the load pulse signal 313, and simultaneously, a data of the shift register 315 is transferred to an output register 316. In such a way, it is possible to offer an input/output controlling circuit which does not require a shift pulse signal and a load pulse signal.

Inventors

• 👤 Tadashi Nishijima
• 👤 西島　正

Bibliographic Details