![]() ![]() Typically, a modifier key is held down while another key is struck. (Apple keyboards have differently labelled but equivalent keys, see below). For example, the ⇧ Shift key can be used to alter the output of character keys, whereas the Ctrl ( control), Alt ( alternate) and AltGr ( alternative graphic) keys trigger special operations when used in concert with other keys. It was equipped with four keys for bucky bits ( Control, Meta, Hyper, and Super) and three shift keys, called " shift", "top", and "front".īesides the character keys, a keyboard incorporates special keys that do nothing by themselves but modify the functions of other keys. ![]() MIT " space-cadet keyboard", an early keyboard with a large number of modifier keys. The positioning of the character keys is similar to the keyboard of a typewriter. Typically, there are three rows of keys for typing letters and punctuation, an upper row for typing digits and special symbols, and the Space bar on the bottom row. The core section of a keyboard consists of character keys, which can be used to type letters and other characters. However, differences between national layouts are mostly due to different selections and placements of symbols on the character keys. There is some variation between different keyboard models in the physical layout-i.e., how many keys there are and how they are positioned on the keyboard. 6.3.2.2.2 Russian QWERTY/QWERTZ-based phonetic layoutsĪ typical 105-key computer keyboard, consisting of sections with different types of keysĪ computer keyboard consists of alphanumeric or character keys for typing, modifier keys for altering the functions of other keys, navigation keys for moving the text cursor on the screen, function keys and system command keys-such as Esc and Break-for special actions, and often a numeric keypad to facilitate calculations. ![]()
0 Comments
Leave a Reply. |