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

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

maintenance contract
contrat m d'entretien

Maintenance contract. Most computer manufacturers and repair companies offer service contracts for these devices. These contracts may include a preventive maintenance clause where the machine is serviced regularly and on demand (i.e. the engineer inspects the machine four times a year and within 24 hours of reporting any fault). Some maintenance contracts include labor costs but do not include the cost of spare parts, while a full service contract includes both clauses.

mark - sense cards
cartes fpl de lecture des marques

Mark reading cards. Computer cards (which may be punched cards) are divided into columns that provide spaces for marking them with a pencil line. Information sense forms are also available. These marks can then be read electrically by a mark reader connected to a computer or punched cards. This method is similar to the optical scanning method where marks are read by a light sensor. Both methods are used to collect and analyze responses to multiple-choice questions.

matrix printer
imprimante f matricielle

dot matrix printer . See dot matrix printer .

medium scale integration

See . large scale integration .

mega -
méga -

mega . A prefix usually denoting one million, but in computer language it means the number two to 20, or 220, which is equal to 1,048,576 .

megabyte (MB or Mbyte)
méga octet m

megabyte . Usually equal to 1,048,576 bytes in computer language, although the use of megabyte to denote one million bytes is increasing .

memory
mémoire f

memory . Computer memory consists of a main store and a backing store . Memory sizes are measured in bytes and are given in K, which stands for kilobytes. (Data or program instructions can be stored.)

Example: A microcomputer with 512K RAM.

memory mapping
topogramme de mémoire

Memory mapping. Data items are often easier to access if they are arranged in an array, but computer memory consists of locations one after the other, and data, although arranged in an array, can be stored sequentially. Arranging or mapping arrays in this way in a "known" part of memory takes up less space than arrays formed by a high-level language. Memory mapping is also useful for sending data to peripherals, especially to the visual display unit (VDU). Here, data can be made to appear simply on a peripheral device by placing it in a specific part of the immediate access store.

memory - switching system
message switching system

Memory switching system. As the name suggests, this communications system uses a computer to accept messages from its terminals, store them if required, and then resend them to other terminals as stated in the message.

MICR
Magnetic ink character recognition

Magnetic ink character recognition. Abbreviation for magnetic ink character recognition.

microcomputer
microcomputer m

microcomputer. A computer that uses a microprocessor chip such as the Zilog Z80A, Intel 80386, or Motorola 68030 in its central processor.