M- commerance : E-commerce that takes place using mobile devices.

Mac OS X : Multitasking operating system that is latest version of the Macintosh operating system.

Machine cycle : Four basic operations performed by the processor : fetch, decoding, executing and storing)

Macro : Sequences of keystrokes and instructions that a user records and saves.

Magnetic Disks : Storage medium that uses magnetic particles to store items such as data , instructions and information on disk's surface.



Magnetic-ink Character recognition : Technology that reads text printed with magnetized ink.

Magnetic stripe card reader/Magstrip reader: Reading device that reads the magnetic stripe on the back of credit , entertainment ,bank and other similar cards.



Magnetoresistive RAM (MRAM): Newer type of RAM that stores data using magnetic charges instead of electrical charges.



Mailing List : Group of e-mail names and addresses given a single name, also called distribution list.

Main memory : Type of memory that can be read from and written to by the processor and other devices, known as RAM .

Mainframe : Large,expensive ,powerful computer that can handle hundreds or thousands of connected users simultaneously, storing tremendous amounts of data, instruction and information.



Malware : Short for malicious software ; programs that act without a user's knowledge and deliberately alter a computer's operations.

Margins: The portion of a page outside the main body of text, including the top, the bottom and both sides of the paper.

Massively parallel processing : Large scale parallel processing that involves hundreds or thousands of processors.

MBps : Magabytes per second.

Mechanical mouse : Mouse that has a rubber or metal ball on its underside.



Media Center PC : Home entertainment desktop computer that provides a means of accessing television programs, radio, broadcasts,photos and videos ,as well as basic computing capabilities.



Media Player : Utilities program that allows to viwe animations ,listen to audio and watch video files.

Memory : Electronic components in a computer that store instructions waiting to be executed and data needed by those instruction.

Memory Module : Small circuit board that houses RAM chips and is held in a memory slot on the motherboard.

Memory resident :Remaining in memory while a computer is running.

Memory slots : Slots on the motherboard that hold memory modules.

Memory Stick : Type of miniature mobile storage medium that is a flash memory card capable of storing between 256 MB and 4 GB of data.

Menu : Item on the computer screen that contains a list of commands from which a user can make selections.

Massage Board : Web-based type of discussion gruop that does not require a newsreader.

Magnetic ink Character Recognization (MICR): Technology that reads text printed with magnetized ink.

MICR Reader : Reading device that converts MICR characters into a form that a computer can process.



Micro browser : Special type of browser designed for small screens and limited computing power of Internet-enabled mobile devices.

Microcode: Instructions programmers use to program a PROM chip.

Microfiche: A small sheet of film, usually 4 inches by 6 inches in size , on which microscopic images of documents are stored.



Microfilms : A roll of film, usually 100 to 215 feet long,on which microscopic images of documents are stored.



Microprocessor : Processsor chip for a personal computers.

MicroSD : Type of miniature mobile storage medium that is a flash memory card capable of storing between 512 MB and 6 GB of data.

Microsoft Surface : Touch screen with a 30-inch tabletop Display that allow one or more people to interact with the screen using their fingers or hands.



Musical instrument digital interface (MIDI) : Electronic music industry's standard that defines how devices represent sounds electronically.

Mini Discs : Optical disc with a size of three inches or less used by smaller computers and devices.

Millions of instructions per second (MIPS) : measurement of system's clock speed.

Mobile computers : Personal computers that a user can carry from one place to another place.

Mobile device : Computing device small enouhg for a user to hold in his hand.

Mobile Printers: Small Lightweight , battery powered printer used by a mobile user to print from a note book computer or Tablet PC, smart phone or other personal mobile devices while travelling.



Mobile User : User who work on a computer while away from a main office ,home office .

Moderator : Person who reviews contents of a newsgroup article and then post it,if appropiate.

Monochrome : Display Device capability in which infromation appears in one color(white) on a different color backgroud(black)

Motherboard : Main circuit board of the system unit, which has some electronic components attached to it and others built into it.



Motion-sensing game controllers: Input devices used with computer and viedo games that allow the user to guide on-screen elements by moving a handheld input device in predetermined directions through the air.



Mouse : Pointing device that fits comfortably under the palm of a user's hand.

Mouse Gestures : Capability that allows users to perform certain operations by holding a mouse button while moving the mouse in a particular pattern.

Mouse Pad : Rectangular rubber or foam pad that provides traction for a mechnical mouse.

Mouse Pointer: Small symbol that display on computer screen whose location and shape changes as a user moves a mouse.

MP3 : Format that reduces an audio file to about one-tenth of its original size,while preserving much of the original quality of sound.

MP4 : Viedo compression standard.

MPEG : Moving Pictures Expert Group.

MPR II : set of standards that defines acceptable levels of electromagnetic radiation for a monitor.

Multi-core Processor : Single chip with two or more seperate processors.

Multifunctional Peripheral : Output device that looks like a copy machine but provides the functionality of a printer ,scanner,copy machine and Fax machine.

Multimedia : Any Application that combines text with graphics ,animation,audio, viedo, and virtual reality.

Multiprocessing : Two or more processor runing programs at the same time.

Multipurpose Operating System : Operating system behave both as stand alone operating system and as a nerwork operating system.

Multiuser : two or more users to run programs simultaneously.