Apple 7100/80AV Manuale Utente

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 Basics
Power Macintosh System Overview - 3
 
Compatibility is not limited just to applications. INITs, 
CDEVs, drivers, and other Macintosh utility software also 
work on PowerPC processor-based Macintosh systems. So do 
AppleTalk devices (such as printers), SCSI devices (such as 
hard drives and scanners), ADB devices (such as mice, 
trackballs, and keyboards), and other Macintosh cards and 
peripherals.
The primary operating system for PowerPC processor-
based Macintosh computers is System 7. The operating 
system has been optimized for the highest performance on 
the PowerPC processor. This optimization of System 7 
benefits applications written for 680x0 systems as well as 
those developed specifically for PowerPC processor-based 
systems.
And while PowerPC-based Macintosh systems running 
native applications offer two to four times the performance