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The Apple Keyboard is a keyboard designed by Apple Inc. first for the Apple line, then the Macintosh line of computers. Dozens of models have been released over time, including the Apple Extended Keyboard. There are currently two keyboards offered by Apple: a full-sized version using USB, and the Apple Wireless Keyboard, which connects via Bluetooth and omits the numeric keypad of the full-sized model. Both share a similar look and feel, based on a very thin aluminum chassis and laptop-style low-profile keys, sitting much closer to the tabletop than traditional keyboard designs. == Layout == To serve the functionality of the Mac OS (and because of historical differences), the Apple Keyboard's layout differs somewhat from that of the ubiquitous IBM PC keyboard, mainly in its modifier and special keys. Some of these keys have unique symbols defined in the Unicode block Miscellaneous Technical. Features different from other keyboards include: * The ''Command'' key (⌘), used in most Mac keyboard shortcuts. The key functions as a Meta key in Unix-like environments, and is equally equivalent to the Windows key in Windows environments, although in common applications it performs the same function as the Windows Control key. Compared to their equivalents on the standard IBM PC keyboard layout the Command key and the Option key are located in reverse order. * * The "open" (hollow) & separate "closed" (solid) Apple logo keys on the Apple II series, served functions similar to that of the Command key. The open-Apple key was combined with the Command key on Apple Desktop Bus keyboards (which were used on both the Apple IIgs and several years of Macintosh models) where it remained after the Apple II line was discontinued. * The ''Option'' key (⌥), for entering diacritics and other special characters. Like the Shift and Control keys, the Option key serves as a modifier for the Command key shortcuts, as well as being used to type many special characters. It serves the function of the solid-Apple key in Apple II applications. It functions as the Alt key in Unix and Windows environments. Compared to their equivalents on the standard IBM PC keyboard layout the Command key and the Option key are located in reverse order. * Full-sized desktop keyboards with a dedicated numpad have function keys that can range up to F15, F16, or F19.〔(Image of the keyboard layout of a full-sized aluminum Apple keyboard )〕 F17-F19 keys were introduced with the aluminium USB keyboard.〔(New slimline iMac keyboard revealed? ), Electronista〕 Compact keyboards such as the bluetooth wireless aluminium keyboard and the built-in keyboards on all Intel-based Macintosh notebooks range from F1-F12 only, just like IBM PC keyboards. * A ''Clear'' key, instead of a Num Lock key, on models with full numeric keypads, as these are dedicated to numeric input and not generally used for cursor control. In Unicode, the Clear key is represented by , defined as "clear key".〔(【引用サイトリンク】 url = http://www.unicode.org/charts/PDF/U2300.pdf )〕 * An "equals" key (=) added to the numeric keypad. * A ''Help'' key, instead of an Insert key, or on the most recent aluminum keyboards, a fn key, which toggles the function of the function keys between their default functions and special functions (volume control, Exposé, etc.). * Notebook computers typically include additional assignments shared with function keys – reduce and increase brightness, volume up, volume down, mute, and eject (⏏). Apple, since the release of the Pro Keyboard, provides these last four keys on desktop keyboards above the numeric keypad where status indicator lights are on many IBM PC keyboards. On the newest aluminium keyboard, these functions are accessed with the function keys, just like on the Apple laptops. * On Apple Desktop Bus keyboards, a power key (◁), used to turn on computers that supported it (and to type the Mac three-finger salute). On keyboards with function keys, it was placed either on the left or right edge of the same keyboard row as the function keys; on keyboards without function keys it was placed in a central location above the other keys. The power key was replaced with a more conventional power button on early USB keyboards, thanks to a proprietary pin wired to the Macintosh's power supply in Apple's early USB implementations, subsequently eliminated on the Pro Keyboard along with the special power supply pin. Most of its functions were transferred to the eject (⏏) key in such later keyboards (holding down the control key simultaneously to make the eject key act like the power key). * The Apple UK keyboard layout has the ''@'' and'' " ''keys in their US locations (on the ''2'' and'' ' ''keys respectively). These are normally reversed on non-Apple UK keyboards. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Apple Keyboard」の詳細全文を読む スポンサード リンク
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