On the Macintosh: Undo
The Mac’s Undo command, available from Edit → Undo, works much like it does in Windows, although it can’t undo Finder actions like moving or deleting a file. Even its keystroke is equivalent: Command-Z.
On the Macintosh: USB
USB, or Universal Serial Bus, is an increasingly popular technology for connecting slow or medium-speed devices to computers. USB connectors and cables can transfer data at up to 12 megabits per second, which makes them useful for gadgets like keyboards, mice, graphics tablets, joysticks, floppy disk drives, Zip drives, scanners, and digital cameras.
Although USB has been available for years in the Windows world, the typical Windows-world chaos of competing drivers and incompatible standards has caused instability in the USB racket, which in turn dissuades users and vendors from adopting USB with more enthusiasm.
In the Macintosh world, however, USB is a stable and increasingly popular standard. All current Macintosh desktop models, including the popular iMac, feature USB jacks. By attaching an inexpensive USB hub to one of the Mac’s available USB ports, or even stringing one USB hub to another, Macintosh users can theoretically connect up to 127 printers, scanners, hard disks, and other devices to a single computer—in addition to the keyboard and mouse, which are standard USB devices on all current Macintosh models.
For more information about USB itself and availability of USB-based peripherals, visit http://www.usb.org/ ...