The name Macintosh System Software came into use in 1987 with System 5. This operating system consisted of the Macintosh Toolbox ROM and the 'System Folder', a set of files that were loaded from disk. As part of an agreement allowing Xerox to buy shares in Apple at a favorable price, it also used concepts from the Xerox PARC Alto computer, which former Apple CEO Steve Jobs and other Lisa team members had previewed. The first version of the system software, which had no official name, was partially based on the Lisa OS, which Apple previously released for the Lisa computer in 1983. It was included with every Macintosh that was sold during the era in which it was developed, and many updates to the system software were done in conjunction with the introduction of new Macintosh systems.Īpple released the original Macintosh on January 24, 1984. The Macintosh operating system is credited with having popularized the graphical user interface concept.

Simply drag your cursor to the edge of one screen in the direction of the other monitor, and the cursor will automatically move to the other screen.Mac OS (originally System Software retronym: Classic Mac OS ) is the series of operating systems developed for the Macintosh family of personal computers by Apple Computer from 1984 to 2001, starting with System 1 and ending with Mac OS 9. The arrangement of your monitors will allow you to easily move your mouse cursor between the screens. Depending on how you've physically set them up, you may even want to drag one monitor icon on top of the other. You can also choose your monitors' arrangement here, including which is on the left and right. This will allow you to display different windows on both monitors, which can help improve your productivity. Uncheck Mirror Displays to extend the desktop to the second monitor instead. Open System Preferences, go to Displays, then select the Arrangement tab. Make Yourself at Home by Arranging Your Monitorsīy default, macOS will usually configure your second monitor to show the same exact contents as the first, which is known as 'mirroring.' This is handy if you're showing a presentation to a group of people, but isn't useful if you want more room for your windows.

Change background mac extended