Macintosh
The Macintosh was a type of personal computer in use on Earth, a form of turn-of-the-millenium technology. 

While visiting Plexicorp in 1986, Montgomery Scott had the opportunity to use a Macintosh. Although initially baffled by the lack of a voice interface – he mistook the computer  for a microphone – Scott proved himself quite proficient in operating its "quaint" keyboard interface. ()

Background information 

Apple Computer Inc. – the official name of Apple in 1986 – is one of the few manufacturers to be the beneficiary of product placement in a Trek production. Kirk Thatcher suggested that the computer be a Macintosh.  The production team originally wanted to use an  for the scene, but that company was only willing to sell and not lend a computer for the film. Earlier versions of the story stated that there was a long wait list for the new Amiga 2000 computer and the Commodore employee fielding the request simply stated they'd have to wait in line to get one just like anyone else.

In 1991-94, Apple launched a project to port the Mac OS to run on PowerPC processors. A previous attempt to port to the 80486 processor was known as the . 

The production staff of the modern Star Trek series, including Denise Okuda, have frequently used Macintosh computers for both writing and artwork projects, including the  and the Star Trek: The Next Generation Technical Manual.  
On the sets of , sixteen Power Mac G4 Cubes administrated by Michael Okuda were used to power the many computer display screens on the bridge, engineering, and sickbay sets, among others.

External links 
 
 
  – stats and info page about the Macintosh Plus, the model seen in The Voyage Home
 Star Trek at the Apple Wiki – history of Star Trek at Apple Computer
  – a guided tour of the Enterprise set, mentioning the behind-the-scenes computers and software setup

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Computer technology