What is Mac OS?GUI based operating system.

Developed by Apple.

User friendly.

Some History1984 was the first year for the Mac OS.

Originally Mac OS was totally coded by Apple.

Apple was founded on April 1, 1976 by Steve Jobs, Steve Wozniak, and Ronald Wayne.

Apple had an intent for uniqueness with it’s products.

Classical Macs100% GUI based no command line.

Originally one application at a time.

Originally used Macintosh File System.

Mac OS XNeXTSTEP based.

Unix OS.

Mach kernel.

POSIX or Portable Operating System Interface for Unix

Aqua

Aqua Evolution

NeXTSTEPOPENSTEP

More Mac, PleaseDarwin.

Second most used OS.

Switch to Intel.

FeaturesAqua GUI

Widgets

ColorSync

Human Interface Guidelines

Exposé

Packed With FeaturesTime Machine

Spaces

Screen Sharing

Finder

Wrapping UpUnix OS.

Ease of use Design Goal.

Aesthetically Pleasing.