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  2. Print Screen - Wikipedia

    en.wikipedia.org/wiki/Print_Screen

    Print Screen. A 104-key PC US English keyboard layout with Print Scrn circled. Print Screen (often abbreviated Print Scrn, Prnt Scrn, Prnt Scr, Prt Scrn, Prt Scn, Prt Scr, Prt Sc, Pr Sc, or PS) is a key present on most PC keyboards. It is typically situated in the same section as the break key and scroll lock key.

  3. Digital signature - Wikipedia

    en.wikipedia.org/wiki/Digital_signature

    Definition. A digital signature scheme typically consists of three algorithms: A key generation algorithm that selects a private key uniformly at random from a set of possible private keys. The algorithm outputs the private key and a corresponding public key. A signing algorithm that, given a message and a private key, produces a signature.

  4. IBM PC keyboard - Wikipedia

    en.wikipedia.org/wiki/IBM_PC_keyboard

    The keyboard for IBM PC-compatible computers is standardized. However, during the more than 30 years of PC architecture being frequently updated, many keyboard layout variations have been developed. A well-known class of IBM PC keyboards is the Model M. Introduced in 1984 and manufactured by IBM, Lexmark, Maxi-Switch and Unicomp, the vast ...

  5. Document Structuring Conventions - Wikipedia

    en.wikipedia.org/wiki/Document_Structuring...

    Document Structuring Conventions, or DSC, is a set of standards for PostScript, based on the use of comments, that specifies a way to structure a PostScript file and a way to expose that structure in a machine-readable way. A PostScript file that conforms to DSC is called a conforming document . The need for a structuring convention arises ...

  6. Control key - Wikipedia

    en.wikipedia.org/wiki/Control_key

    Control key. In computing, a Control key Ctrl is a modifier key which, when pressed in conjunction with another key, performs a special operation (for example, Ctrl + C ). Similarly to the Shift key, the Control key rarely performs any function when pressed by itself. The Control key is located on or near the bottom left side of most keyboards ...

  7. Computer keyboard - Wikipedia

    en.wikipedia.org/wiki/Computer_keyboard

    Typing on a laptop keyboard. A computer keyboard is a peripheral input device modeled after the typewriter keyboard [1] [2] which uses an arrangement of buttons or keys to act as mechanical levers or electronic switches. Replacing early punched cards and paper tape technology, interaction via teleprinter -style keyboards have been the main ...

  8. PrintKey 2000 - Wikipedia

    en.wikipedia.org/wiki/PrintKey_2000

    Screenshot. License. Freeware. PrintKey 2000 is a discontinued screenshot software program for Microsoft Windows which rose to popularity in the late 1990s. The free software allows the user to modify screenshots after they are taken. The program is activated by the Print screen button or a configurable Control key combination, then displays an ...

  9. Code signing - Wikipedia

    en.wikipedia.org/wiki/Code_signing

    Code signing is the process of digitally signing executables and scripts to confirm the software author and guarantee that the code has not been altered or corrupted since it was signed. The process employs the use of a cryptographic hash to validate authenticity and integrity. [1] Code signing was invented in 1995 by Michael Doyle, as part of ...