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MAC address
a unique identifier assigned to network interfaces for communications on the physical network segment, used for numerous network technologies and most IEEE 802 network technologies, including Ethernet
machine code
a computer language that consists entirely of a combination of 1s and 0s
machine intelligence
another name for artificial intelligence
macro virus
a virus program in the form of a macro program
magic date
a date or dates that in some computer systems resembles a reserved number or flag with a special significance
magnetic stripe card
a plastic card with magnetic stripe running across it containing confidential data
magnetic tape
a magnetic storage medium in the form of a thin plastic ribbon wound on a reel or a cassette, commonly used for backing up data.
mail analyst
someone who is resposible for directing mail, which has been scanned using a DIP system, to the correct recipient
mail bombing
a computer crime that involves inundating an email address with thousands of messages slowing or even crashing the server
mail server
a network service that stores email messages and enables email clients to send and receive emails
mailbox
a folder used by an email server to store a user’s emails
mailmerge
a wordprocessing facility that causes a mailing list to be automatically combined with a standard letter to produce a separate copy of the letter addressed to each person on the mailing list
main memory
the electronic memory that holds the programs and data being used
main storage
the main area in a computer in which data is stored for quick access by the computer’s processor
mainframe
a large computer which requires a special environment for temperature and humidity in order to run it; this is in contrast to minicomputer or microcomputer
mains line
the main electricity supply
maintenance
the modification of a software product after delivery to correct faults, to improve performance or other attributes
malware
any software designed to do something that the user would not wish it to do, hasn’t asked it to do, and often has no knowledge of until it’s too late, including backdoor, virus, worm, Trojan horse; it typically affects the system on which it is run, e.g. by deleting or corrupting files on the local disks
management information system
a computerized system for providing information to management
manufacturer
a company or country that produces goods in large numbers
markup language
a set of tags that can be inserted into a document to indicate its layout and appearance
massively parallel
being part of a system in which an application is processed by up to 200 or more processors at the same time; each processor using its own operating systems and memory and working on a different part of the program
maths function
a software feature which allows simple mathematical functions to be carried out (such as totalling columns)
media player
a computer program that can store, copy, and play sound and picture files
memory board
a circuit board which contains additional memory for a computer
memory
the electronic part of a computer system that is used for temporarily storing the programs and data that are being used by the processor
menu bar
a row of icons on a display screen that open up menus when selected
menu
a list of options displayed on a computer screen
menu-driven
describing a program that obtains input by displaying a list of options (the menu) from which the user indicates his choice
merge sort
a sorting technique that sequences data by continuously merging items in the list; every single item in the original unordered list is merged with another, creating groups of two; every two-item group is merged, creating groups of four and so on until there is one ordered list
message board
a place on a website where you can leave messages for other people to read
message-authentication code
a number produced by a message-digest function that is used to make a message tamper-proof and provide message integrity
message-digest function
a program function that processes a message to produce a number called a message-authentication code, and then this number is used to make a message tamper-proof
message-integrity scheme
a system that allows the receiver of a message to detect whether someone has tampered with the message in transit
metadata
data about data in a document
microphone
a device that converts sound waves into an electric current
microwave
a high-frequency electromagnetic wave used in data communication systems
mirroring
a technique used in RAID 1 systems where at least two hard disks are paired in such a way that the hard disk controller writes each byte of data to both disks; this ensures that a backup exists should the primary disk drive fail
misdirection routine
the part of a computer virus that enables it to hide itself by altering the normal sequence of instructions in another program
Massively Multiplayer Online Role Playing Game
a type of video game in which players act out roles of characters and which allows thousands of gamers to play simultaneously in the game's evolving virtual world via the internet
Mobile Device Management
a type of security software used by an IT department to monitor, manage and secure employee’s mobile devices that are deployed across multiple mobile service providers and across multiple mobile operating systems being used in the organization
model-view-controller
a software architectural pattern for implementing user interfaces, it divides a given software application into three interconnected parts, so as to separate internal representations of information from the ways that information is presented to or accepted from the user
modem, short for modulator/demodulator
an electronic device that converts signals to enable a computer to be connected to an ordinary telephone line
modulation
a process of combining a data signal to enable a computer to be connected to an ordinary telephone line
monitor
the main output device used to display the output from a computer on a screen
monochrome display
a kind of display able to show only a single colour, often green, amber, red or white, and often also shades of that colour
MOO
an Internet virtual environment developed from multi-user adventure games that allows many users to interact
mosaic
the first widely-distributed graphical browser or viewer for the World Wide Web
motherboard
the main electronic circuit board inside a computer that holds and connects together all the main electronic components
mouse
a pointing device that functions by detecting two-dimensional motion relative to its supporting surface
mousepad
a surface for placing and moving a computer mouse
MS-DOS
operating system for x86-based personal computers; the first edition was launched in 1982, in particular by various generations of the Microsoft Windows operating system
MUD
a real-time virtual world, usually text-based
Multi-Chip Module
an electronic package consisting of multiple integrated circuits (ICs) assembled into a single device; it works as a single component and is capable of handling an entire function
multi-core processor
a single computing component with two or more independent actual central processing units, which read and execute program instructions
multimedia, the combination of text
graphics, animation, sound and video
multimodal input
the process of operating a user interface using a combination of types of input, e.g. keyboard and speech recognition
multimodal interface
a system that allows a user to interact with a computer using a combination of inputs such as speech recognition, hand-writing recognition, text-to-speech etc.
multiplexing
a technique of sending several signals through one transmission medium
multitasking
a technique used in an operating system for sharing a single processor between several independent jobs
MVS
the name given to a family of operating systems used on IBM mainframe computers
MySQL
relational database system management developed by Oracle