SCIENCE/TECHNOLOGY

Gateway Founder Resigns: David S. McMaster has resigned as chief executive of Gateway Communications Inc., a computer network and communications company he founded in 1981, to pursue other interests. He will be succeeded by Donald F. Brosnan, a director of the company.

Brosnan will assume duties as president and chief executive on Jan. 1. McMaster will remain a director with Gateway. Brosnan has been a member of the Gateway board of directors since 1986 and most recently has been an independent consultant.

For five years, he represented Hillman Ventures, a venture capital firm, handling management and board of director assignments with companies where Hillman held stakes. Brosnan was previously president of MSI Data Corp., a Costa Mesa maker of data-entry terminals. Before that, Brosnan had a long career with Honeywell Inc. as a general manager and marketing executive in its information systems business.

Neither Brosnan nor McMaster were available Monday for comment. For the nine months ended Sept. 30, Gateway reported net income of $750,000, or 15 cents a share, contrasted with net income of $168,000, or 4 cents a share, a year earlier. Revenues fell 5% to $17.8 million, contrasted with revenue of $18.7 million a year earlier.