a dedicated platform for several pioneering hypertext programs, such as ZOG, KMS, and Guide. DP ("Drawing Program"), a CAD system used for creating circuit diagrams on the PERQ, was written by Dario Giuse at CMU. References External links ICL Technical Journal - November 1982 All About PERQ Workstations DigiBarn: The Three Rivers PERQ PERQ Documentation at bitsavers.org Graphical User Interface Gallery: Three Rivers / ICL Perq Rutherford Laboratory Atlas Computing Division: Single User System Programme archive. Includes detailed material relating to PERQ history as it affected a joint project involving the Science and Engineering Research Council and ICL. PERQemu: a PERQ 1 emulator for Microsoft Windows/Mono (under development, v0.21 is capable of booting and running POS) Code generator for F77 and Imp compilers by Edinburgh Regional Computing Center (ERCC). (The full compiler sources are in the enclosing directory. Some related explicitly copyrighted files have been removed from that public archive.) Computer-related introductions in 1980 Personal computers ICL workstations