implementation of distributed computing. Window systems Pike wrote two window systems for the Blit, mpx for 8th Edition Unix and mux for 9th Edition, both sporting a minimalistic design. The design of these influenced the later Plan 9 window systems 8½ and rio. When the Blit was commercialized as the DMD 5620, a variant of mpx called "layers" was added to SVR3. 9front (a Plan 9 fork) contains a Blit emulator that runs its original firmware, which can be used with mux (available in recently released Research Unix v8). See also 3B series computers, some of which also used the WECO 32000 processor, were often used with DMD 5620s 9wm History of the graphical user interface rio Thin client X terminal References Notes External links Bart Locanthi, Rob Pike: Blit (MPEG) (YouTube), the classic animated short about the windowing terminal project (it was necessary to explain how mice worked back then; this was 1982, two years before the Mac) (MPEG) Source code (contains proprietary code) 5620 AT&T computers Computer terminals Computer-related introductions in 1982 Thin clients User interfaces