NEW YORK, SEPT. 18 -- NCR Corp. said today it would replace its entire computer line with industry-standard machines that all could communicate with each other -- a first for an old-line computer maker.

The new models from a company better known for its cash registers and automated teller machines could strengthen NCR's presence in the computer industry, where it has only done well among retailing and banking customers, analysts said.

NCR said it would produce the entire computer line, from tiny laptop models to extremely powerful mainframes, from the same Intel Corp. computer chips. That would make NCR the first company to use the same microprocessor for a product line this broad, analysts said.

Using the same microprocessor, the computer-on-a-chip that is the brain of modern computers, would make the line compatible, meaning a laptop could get at information stored on a mainframe.

NCR also said the computers would run industry-standard operating systems, which control a computer's internal functions.

The computer lines of most major makers -- including NCR -- are divided between proprietary, or company-specific, processing systems and "open," or industry-standard, systems.

The Dayton, Ohio-based company said it eventually would provide computers in seven ranges of performance and size. It announced six machines in three levels, from desktop workstations to mainframe-class machines, priced from $10,000 to $800,000.