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41Digital signature — This article is about secure cryptographic signatures. For simple signatures in digital form, see Electronic signature. A digital signature or digital signature scheme is a mathematical scheme for demonstrating the authenticity of a digital… …
42Criticism of Windows XP — For criticism applying to several or all versions of Microsoft Windows, see Criticism of Microsoft Windows. This article is part of a series on Windows XP New features Releases and editions (x64 · Me …
43Table of keyboard shortcuts — In computing, a keyboard shortcut is a sequence or combination of keystrokes on a computer keyboard which invokes commands in software. Some keyboard shortcuts require the user to press a single key or a sequence of keys one after the other.… …
44List of Kiba characters — This is a list of characters from the Japanese anime television series, Kiba. The series is set on a fictional universe where the characters are divided into different factions and races. It also features monster like beings, known as Spirit ,… …
45Immune system — A scanning electron microscope image of a single neutrophil (yellow), engulfing anthrax bacteria (orange). An immune system is a system of biological structures and processes within an organism that protects against disease by identifying and… …
46List of Saw characters — Actors who have portrayed central characters of the series. Top, left to right: Tobin Bell, Shawnee Smith, Cary Elwes. Bottom, left to right: Costas Mandylor, Danny Glover, Betsy Russell. The Saw series of horror films features a large cast of… …
47Brain — This article is about the brains of all types of animals, including humans. For information specific to the human brain, see Human brain. For other uses, see Brain (disambiguation). A chimpanzee brain The brain is …
48Num lock — is a key on the numeric keypad of most computer keyboards. It is a toggle key, like Caps Lock and Scroll Lock. Its state is commonly represented by an LED light built into the keyboard. A keyboard with Num lock turned ON The Num Lock key exists… …
49Norton Internet Security — The main, simplified graphical user interface of Norton Internet Security 2012 …
50The Guardian Legend — Infobox VG title=The Guardian Legend caption=North American boxart developer=Compile publisher=vgrelease|JP=Irem|NA=Brøderbund|EU=Nintendo designer=Masamitsu Moo Niitani (director) Jemini Hirono (program and effect) Pochi Nakamori (map maker)… …
