Short for kilobyte. When used to describe data storage, KB usually represents 1,024 bytes. When used to describe data transfer rates, KB represents 1,000 bytes.
keyboard is basically a board of keys which is the primary input devices used with a computer. Although the design of the computer keyboard comes from typewriters, the keyboards of today have many additional keysl. Modifier keys, such as Control, Alt/Option, and Command (Mac) or the Windows key (Windows) can be used in conjunction with other keys as shortcuts to perform certain operations. Pressing the Command-S on a Mac, or the Control-S on Windows typically saves a document or project. Computer keyboards also have a row of function keys, F1 through F16, along the top of the keyboard. There also are arrow keys arranged in an upside-down T, and a numeric keypad on the right-hand side of the keyboard.
A keylogger is a program that records the keystrokes on a computer. It does this by monitoring a user's input and keeping a log of all keys that are pressed. The log may saved to a file or even sent to another machine over a network or the Internet. Keylogger programs are often deemed spyware because they usually run without the user knowing it. They can be maliciously installed by hackers to spy on what a user is typing. By examining the keylog data, it may be possible to find private information such as a username and password combination. Therefore, keyloggers can be a significant security risk if they are unknowingly installed on a computer.
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In text editing and database management systems, a keyword is an index entry that identifies a specific record or document or a searchable term extracted from a data set during indexing.
is the essential center of a computer operating system, the core that provides basic services for all other parts of the operating system. A synonym is nucleus. A kernel can be contrasted with a shell, the outermost part of an operating system that interacts with user commands. Kernel and shell are terms used more frequently in UNIX.
ksh - Korn shell
is an interactive command language that provides access to the UNIX system. The Korn shell language is also a complete, powerful, high-level programming language for writing applications. Ksh has the functionality of other scripting languages such as awk, icon, perl, rexx, and tcl. The Korn Shell language uses the same syntax for built-in commands as for non built-in commands.