TECHNOLOGY & TELECOMMUNICATIONS

NEC, AT&T; Develop Chip Technology: NEC Corp. of Japan and American Telephone & Telegraph Co. have jointly developed technology to mass-produce next-generation computer memory chips. NEC said the development will pave the way for production of 64-megabit memory chips on a commercial basis in 1995. The new technology could also be applied to the more advanced 256-megabit chips, it said. The two companies reached broad agreement on cooperation in chip development in 1990. The current highest-capacity memory chip in production is the 16-megabit chip, which stores up to 16 million bits of information. The 64-megabit chip would have four times that capacity.