At the time of its release, the Apple G4 was the most powerful computer Apple had ever made. It was powered by the G4e chip from Motorola, which improved speed while reducing heat generated by the procesor. It contained a 60GB Ultra ATA hard disk, optional internal zip drive and 256MB RAM built-in (expandable to 1.5GB). The G4's SuperDrive enabled it to read and write to CD-R and CD-RW disks, and also to new DVD-R disks. The first computer mouse was invented by Dr Doug Engelbart at the Stanford Research Institute (SRI), California, in 1963-1964.
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