In 1964, DEC introduced its new Flip Chip module design, and used it to re-implement the PDP-4 as the PDP-7. The PDP-7 was introduced in December 1964, and about 120 were eventually produced. An upgrade to the Flip Chip led to the R series, which in turn led to the PDP-7A in 1965. The PDP-7 is most famous as the machine for which the Unix operating system was originally written. Unix ran only on DEC systems until the Interdata 8/32.
in 1964 dec introduced its new flip chip module design and used it to re-implement the pdp-4 as the pdp-7 the pdp-7 was introduced in december 1964 and about 120 were eventually produced an upgrade to the flip chip led to the r series which in turn led to the pdp-7a in 1965 the pdp-7 is most famous as the machine for which the unix operating system was originally written unix ran only on dec systems until the interdata 8/32