أكاديميا - كولنز - معاجم الجيب العلمية - الكمبيوتر - انكليزي - فرنسي - عربي الحرف ٥_m

Academia - Collins - Pocket Dictionaries - Computer - English - French - Arabic Letter 5_M

most significant character
caractère m le plus significatif

The most significant character. It is the character at the far left of a group of characters.

motherboard
circuiterie f principale

The motherboard. Some microcomputers consist of more than one printed circuit board. There may be a control board for the disk, another for providing high-resolution graphics, a third for colors, a fourth to hold the input/output ports, etc. The board that stores and holds all these boards is called the motherboard.

mouse
souris f

Mouse. A desktop device with a tracking ball at the bottom. When this ball moves, it changes position and direction, thus directing a pointer on the screen. This device eliminates the need for touchpad instructions because the pointer can be directed to a graphic symbol, and functions can be selected by using a button on the top of the device. The mouse is part of the WIMP environment and is widely used in computer-aided design (CAD), word processing, and layout programs.

MPU
microprocessor m

microprocessing unit. Abbreviation for microprocessor unit.

MS - DOS
MS-DOS

A common disk operating system (DOS) produced by Microsoft Corporation.

multi-access processing system système m informatique à accesses multiple

A multiplexed processing system. Also called a time-sharing system, it consists of a central computer with a specialized operating system. Multiple users at anonymous terminals can be connected to a central computer that examines each line in turn. If a terminal wants to access the CPU, data is sent from the multiplexor or from a backup store connected to it via a high-speed input connection to the CPU. The data is quickly processed and returned. This is called roll in - roll out. Because of the speed at which each line is scanned and processed (response time is typically five seconds), each user of a terminal thinks he or she is the only user of the computer.

Multi-line systems are used for single applications (often over large areas) that require central processing. Examples include: holiday airline reservations, a central police computer, the internal tax system, and automatic teller machines or cash dispensers.

multiplexor
multiplexer m

A device that is responsible for sending data between a computer and its multiple users. A multiplexer can travel so fast that data along a single wire can be routed to or from several different wires, each of which behaves as if it were in continuous contact. Multiplexers are often used in pairs, one at a certain distance from the other, each with multiple connections despite the presence of a single path between them. The path may be made of wire, fiberglass, or microwaves.

multiprinter
imprimante f multiple

Multi-printer. A lightweight electronic typewriter with a memory capacity of 6000 bytes and a liquid crystal display. Using a special receiver, this machine can be operated as a dot matrix printer.

multi-task processing
multi-tâches

A multi-tasking processor is a specialized operating system that allows several programs to be stored in the computer's memory at the same time. The operating system prioritizes processing so that peripheral devices, such as printers, are kept busy while the CPU does whatever processing/computations are needed. On the surface, it appears as if the system is doing all its tasks together, but in reality, small parts of each task are being executed one after the other.

The great advantage of this processor is that it keeps all the equipment, especially expensive peripherals, running most of the time, giving it its value for money. In addition, spooling the printer gives the CPU more freedom to process other data.

New types of multitasking software are now available, which combine a specialized operating system with application software, examples of which are Microsoft Windows and the WIMP suite.


multivibrator
multivibrateur m

A multivibrator. A basic electronic circuit that can be made using two transistors and a few components. There are three types:

A - Astable multivibrator, which constantly switches from one state to the other, and is used in computers as a clock.

B - Bistable multivibrator, which remains in one of its two states, and is used to store a binary digit. It is sometimes known as a flip-flop.

C - Monostable multivibrator, which, when switched to the other state, always returns to its original state after a certain time, and is used for fixed timing or as a delay circuit.