landscape mode Page orientation in which the page width is greater than its height.
laptop computer A portable computer that is light and small enough to be held on your lap.
laser printer A popular nonimpact, high-resolution printer that uses a version of the electrostatic reproduction technology of copying machines.
last-mile problem The lack of local network systems for high-bandwidth multimedia communications that can accommodate the Information Superhighway.
leading The space between the lines of text.
leased line A dedicated line provided by the telephone company.
light pen An input device that uses a light-sensitive stylus to draw on-screen or on a graphics tablet, or to select items from a menu.
line graph A graph that uses lines to show the variations of data over time or to show the relationship between two numeric variables.
line printer A printer that can produce text but not graphics.
liquid crystal display (LCD) A small, flat-screen monitor used with laptop computers.
local area network (LAN) Computers within a limited area that are linked by high-performance cables so that users can exchange information and share hardware, software, and data resources.
logic construct A type of construct (simple sequence, condition, iteration, or case) on which all programs are based.
logic error An error that is the result of an incorrect algorithm.
logistics The planning and carrying out of a complex plan, usually involving moving material and people from one location to another.
loop A programming construct in which the same set of instructions is executed as many times as necessary to process all the data; also called an iteration.
low-level language A language, such as machine language or programming language, that describes exactly the procedures to be carried out by a computer's central processing unit.