أكاديميا - كولنز - معاجم الجيب العلمية - الكمبيوتر - انكليزي - فرنسي -عربي الحرف ٢_ l

Academia - Collins - Pocket Scientific Dictionaries - Computer - English - French - Arabic Letter 2_ L

light emitting diode (LED)
diode f électroluminescente

A light emitting diode. A small, colored device that emits light like a lamp. It is very useful as a signal lamp in things like computers, televisions and radios because it requires very little current and operates at low voltages. It was used in computers and digital wristwatches but has been largely replaced by the liquid crystal display (LCD) which requires less electricity.

light guide
guide m de lumière

A light guide. This name is given to a fiber of glass or Perspex used to transmit optical signals. Light enters at one end of the fiber and is completely internally reflected along the fiber optic, meaning it is guided by the fiber.

light pen
photostyle m

A light pen. Sometimes called a "wand", it is used with a graphic display unit to allow the operator to draw, change and animate sections of an image simply by moving the pen across the screen. The pen is connected to the computer by a cable and the operator uses a touchpad to control the changes. The light pen can also be used to read bar codes. By passing the pen across the dark and light lines, the computer can read the signals and give the number of the bar code.

line feed
changement m d'intervalle

Line ascension. An instruction in a program or a button on the printer. In both cases, we move to the
next line.

line printer
printer f par lignes

Line printer. One type consists of a cylinder with rows of characters so that the A's are in one row and the B's are in the next row... and so on. When the paper is to be printed between the hammer and the cylinder, a line rotates, printing all the A's in the line, then it rotates, printing the B's, then the C's. When the cylinder completes a full rotation, the entire line has been printed. The speed of this printer is between 500 and 3000 lines per minute, but the lines usually appear wavy.

For example: A line printer can print the phrase -COLLINS COM PUTER GEM on a single line as follows:

liquid crystal display (LCD)

A liquid crystal display. It consists of a liquid whose molecules can be aligned, making them darker when an electric voltage is passed through. It is used in seven segment displays in watches and calculators because it requires a small amount of electricity.

Some liquid crystals change color with the effect of heat.

They can be used as inaccurate thermometers.

list
liste f

List. Generally referred to as an entry of program data on a screen or on paper according to numerical order. To follow the program data according to the order of execution, one must use a trace facility.

load
chargement m

isaq. Reading program data or data from a backing store to its respective parts of the computing memory.

location
emplacement m

location. The name given to the places within a computer capable of storing data. Each location is known and accessed by its own address, and the number of attributes that can be stored in a location depends on the machine used.

logic circuit
circuit m logique

Logic circuit. The basic building blocks of digital electronics, often referred to as "logic gates", and the expressions AND, OR, NOT, NAND, and NOT, NOR, are all examples of logic circuits, which are the circuits on a silicon chip. In an uncommitted logic array (ULA), groups of logic circuits are left unconnected to produce the desired circuit pattern.