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A modern PC keyboard typically includes a control processor and indicator lights to provide feedback to the user about what state the keyboard is in. Depending on the sophistication of the controller's programming, the keyboard may also offer other special features. The processor is usually a single chip 8048 microcontroller variant. The ...
Some user scripts allow you to add more keyboard shortcuts for various actions or customize existing ones: up-one-lvl-kbd [4] – The "U" keyboard shortcut now navigates up one subpage level. hover-edit-section [5] – The "D" keyboard shortcut now edits the section you're hovering over.
Forms Data Format is defined in the PDF specification (since PDF 1.2). The Forms Data Format can be used when submitting form data to a server, receiving the response, and incorporating it into the interactive form. It can also be used to export form data to stand-alone files that can be imported back into the corresponding PDF interactive form.
Overhead view of DataHand units that provide full computer keyboard and mouse functionality The right-hand of a Professional II keyboard [1]. The DataHand is an unconventional computer keyboard introduced in 1990 by DataHand Systems, Inc., designed to be operated without any wrist motion or finger extension.
Keystroke logging, often referred to as keylogging or keyboard capturing, is the action of recording (logging) the keys struck on a keyboard, [1] [2] typically covertly, so that a person using the keyboard is unaware that their actions are being monitored. Data can then be retrieved by the person operating the logging program.
Person typing on a laptop keyboard Video of typing on a notebook computer keyboard. Typing is the process of writing or inputting text by pressing keys on a typewriter, computer keyboard, mobile phone, or calculator. It can be distinguished from other means of text input, such as handwriting and speech recognition. Text can be in the form of ...
Keys added since the PC AT often have different scancodes in set 2 and set 3, and in set 2 frequently have an E0 or E1 prefix. Again, key release is indicated by an F0 prefix. For computers since the IBM PC AT, the keyboard controller on the motherboard translates AT (set 2) scancodes into XT (set 1) scancodes in so called translation mode. [3]