Apple Products Evolution

• 1986–1993: Rise and fall
Having learned several painful lessons after introducing the bulky Macintosh Portable in 1989, Apple introduced the PowerBook in 1991. The Macintosh Portable was designed to be just as powerful as a desktop Macintosh, but weighed 7.5 kilograms (17 lb) with a 12-hour battery life. The same year, Apple introduced System 7, a major upgrade to the operating system, which added color to the interface and introduced new networking capabilities. It remained the architectural basis for Mac OS until 2001.
The success of the PowerBook and other products brought increasing revenue. For some time, it appeared that Apple could do no wrong, introducing fresh new products and generating increasing profits in the process. The magazine MacAddict named the period between 1989 and 1991 as the "first golden age" of the Macintosh.
Following the success of the Macintosh LC, Apple introduced the Centris line, a low-end Quadra offering, and the ill-fated Performa line that was sold in several confusing configurations and software bundles to avoid competing with the various consumer outlets such as Sears, Price Club, and Wal-Mart, who were the primary dealers for these models. The result was disastrous for Apple as consumers did not understand the difference between models.