In a deposition taken and videotaped last summer by government lawyers, Gates was questioned about his company's concerns with ''non-Microsoft browsers'' in January 1996.
Browsers allow people to view the Internet.
Gates' memory lapses clearly frustrated the government attorney questioning him. They also amused U.S. District Judge Thomas Penfield Jackson, who is overseeing the antitrust case. The hour's worth of clips were part of a videotaped deposition taken at Microsoft's headquarters outside Seattle. The government has been playing pieces of the 20-hour interview throughout the trial. The government accuses Microsoft of illegally using its influence as the maker of the dominant Windows operating systems to defend its monopoly and try to extend into new markets, including Internet browsers.