Logic element and article comprising the element

US4999687A · kind A · utility

Assignee

• AT&T Bell Laboratories · US

Inventors

• Sergey Luryi · Bound Brook, US
• Mark R. Pinto · Summit, US

Key dates

• Filing date: Apr 25, 1990
• Grant date: Mar 12, 1991
• Expiry date: Apr 25, 2010

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10D48/362

Abstract

Disclosed are a novel logic element (designated NORAND), and articles that comprise the element. Exemplarily, the NORAND element comprises three input terminals and an output terminal. If one of the input terminals is at logic 0 then the element functions as a logic NOR unit, and if the terminal is at logic 1 the element functions as a logic AND unit. The novel element thus makes possible reprogrammable and/or self-organizing logic circuits. The NORAND element can be realized with a single active semiconductor device, exemplarily a real space transfer (RST) device.