IBM System/370 Model 135

For many users of intermediate and smaller computers, the IBM System/370 Model 135, announced on March 8, 1971, will provide economical and flexible entry into a wide range of advanced data base applications. Among the factors significant to the Model 135's data base, teleprocessing and multiprogramming capabilities are: •Main memory capacity of up to 240,000 bytes, nearly four times that of System/360 Model 30 •Internal operating speeds up to four and one-half times faster than the Model 30 and six and one-half times faster than the Model 25 for commercial applications; for typical scientific jobs, internal speeds up to seven times faster than the Model 30 and 16 times faster than the Model 25 •An optional integrated communications attachment and a disk storage control feature that reduce the cost of data base applications using terminals •Expanded channel capacity and the ability to use the high-performance IBM 3330 disk storage under either Operating System (OS) or Disk Operating System (DOS) control