From Macintosh System 1 to macOS Sequoia: The Epic Evolution of Apple’s OS
Apple launched the Macintosh with System 1 in 1984, introducing a graphical interface and mouse. System 7 in 1991 brought virtual memory and networking. Mac OS X arrived in 2001 after Apple acquired NeXT, shifting to a Unix-based core. Apple completed the transition to its own Silicon chips in 2022; macOS Sequoia (2024) added on-device AI and iPhone Mirroring.