Macintosh

Macintosh, commonly shortened to Mac, is a series of several lines of personal computers designed, developed, and marketed by Apple Inc. The Macintosh was introduced on January 24, 1984; it was the first commercially successful personal computer to feature a mouse and a graphical user interface rather than a command-line interface.

Through the second half of the 1980s, the company built market share only to see it dissipate in the 1990 s as the personal computer market shifted towards IBM PC

compatible machines running MS-DOS and Microsoft Windows. Ap ple consolidated multiple consumer-level desktop models into the 1998 iMacMac Mini desktop models, the workstation-level Mac Pro tower, the MacBook, MacBook Air and MacBook Pro laptops, and the Xserve server. all-in-one, which was a sales success and saw the Macintosh brand revitalized. Current Mac systems are mainly targeted at the home, education, and creative professional markets. They are: the aforementioned (though upgraded) iMac and the entry-levelIn October 1991, the Macintosh Portable was replaced by the first three models in Apple’s enduring PowerBook range—the PowerBook 100, a miniaturized Portable; the 16 MHz 68030 PowerBook 140; and the 25 MHz 68030 PowerBook 170. They were the first portable computers with the keyboard behind a palm rest, and with a built-in pointing device (a trackball) in front of the keyboard.

Powerbook- 100

In October 1991, the Macintosh Portable was replaced by the first three models in Apple’s enduring PowerBook range—the PowerBook 100, a miniaturized Portable; the 16 MHz 68030 PowerBook 140; and the 25 MHz 68030 PowerBook 170. They were the first portable computers with the keyboard behind a palm rest, and with a built-in pointing device (a trackball) in front of the keyboard.