Final answer:
The Macintosh was the first commodity personal computer with a graphical user interface (GUI), making it more user-friendly and accessible.
Step-by-step explanation:
The Macintosh is notable because it was the first commodity personal computer with a graphical user interface (GUI). Prior to the Macintosh, most personal computers used a command-line interface that required users to enter text commands to interact with the computer. The Macintosh's GUI allowed users to interact with the computer using a mouse and visual elements such as icons and windows.
This innovation made personal computers much more user-friendly and accessible to a wider audience. The Macintosh's GUI design was a major influence on the development of future computer interfaces and is still used in modern operating systems today.