The Macintosh operating system has had all these impressive features since the mid-1980's.

System 7 is the name of a Macintosh operating system introduced in 1991.

System 7, the current version of the Macintosh operating system, will continue to be improved, he said.

When it was unveiled in 1984, the Macintosh operating system caused a sensation.

Would I be able to install the Macintosh operating system on my computer, or is that impossible?

It was sent to software developers last month as an extension of the Macintosh operating system.

The software now supports 64-bit hardware and the Macintosh operating system.

System 7 was the first Macintosh operating system to support 32-bit addressing.

And it is rewriting the Macintosh operating system to allow the machines to do more than one task at a time.

The functional equivalent in the Macintosh operating system is called an alias.