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The iBook is a line of discontinued laptop computers sold by Apple Inc. between 1999 and 2006.

The line was targeted at the consumer and education markets, with lower specifications and prices than the PowerBook, Apple's higher-end line of laptop computers.

Three distinct designs of the iBook were introduced during its lifetime. The first design, known as the "Clamshell", was a significant departure from portable computer designs at the time due to its shape, bright colors, incorporation of a handle, and wireless networking. Two years later, a second line abandoned the original form factor in favor of a more conventional rectangular design. In October 2003, the third design added a PowerPC G4 chip and a slot-loading drive.

Apple replaced the iBook line with the MacBook in May 2006 during Appleā€™s transition to Intel processors.


iBook G3 ("Clamshell")

In the late 1990s Apple was trimming its product line from the bewildering variety of intersecting Performa, Quadra, LC, Power Macintosh and PowerBook models to a simplified "four box" strategy: desktop and portable computers, each in both consumer and professional models. Three boxes of this strategy were already in place: The newly-introduced iMac was the consumer desktop, the Blue and White G3 filled the professional desktop box, and the PowerBook line served as the professional portable line. This left only the consumer portable space empty, leading to much rumor on the Internet of potential designs and features. Putting an end to this speculation, Steve Jobs unveiled the iBook G3 during the keynote presentation of Macworld Conference & Expo, New York City on July 21, 1999.

The design was clearly influenced by Apple's consumer desktop, the iMac. In fact, the marketing slogan was "iMac to go". The clamshell design also echoed the eMate 300. Apple continued its trend of using transparent colored plastics for the shell, and releasing a product in multiple colors. Like the iMac, the iBook G3 had a PowerPC G3 CPU, and no legacy Apple interfaces. USB, Ethernet, modem ports and an optical drive were standard. The ports were left uncovered along the left side: a cover was thought to be fragile. When the lid was closed, the hinge kept it firmly shut, so there was no need for a latch on the screen. The hinge included an integrated carrying handle. Additional power connectors on the bottom surface allowed multiple iBook G3s to be charged on a custom-made rack. The iBook G3 was the first Mac to use Apple's new "Unified Motherboard Architecture", which condensed all of the machine's core features into two chips, and added AGP and Ultra DMA support.

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