Instrument used for detecting pulses and

determining the logic level on the pins of

logic chips

logic state /'lod3ik steit/ [24] one of two

stable voltage levels of a digital circuit (i.e.

1 Or 0, high or low) long wave /'log weiv/ [10] range of radio

signal wavelengths of more than one

kilometre

long-play album /, 1 оrj plei 'aelbam/ [18] collection of recordings on a vinyl disc which plays for up to 45 minutes on each side

long-playing record /log pleiirj rekoid/ [16] vinyl record which stores up to 45 minutes of audio recording on each side

loudness /'laudnas/ [15] see volume

loudspeaker /,laud'spi:ka(r)/ [1] device for converting electrical signals into sound

low logic level /Дао 'lod3ik ,levl/ [19] lowest operating voltage of a digital logic circuit

LP/el 'pi:/[16, 17] long-playing record LSI /,el es 'ai/ [23] large scale integration:

between 100 and 1000 active components

contained on one 1С chip

^□

mA /'miliaemps/ [11 ] milliamps magnetic field /masg.netik 'fi:ld/ [12] area

around a magnet in which the magnetic

force has an effect magnetic pick-up (head) /maeg.netik

'pik лр (hed)/ [13] part of a record player

which uses electromagnetic induction to

convert the movement of the gramophone

needle into an electrical signal magnetic tape /maeg.netik 'teip/ [21]

plastic material coated in magnetic oxide

used in thin strips for the magnetic storage

of sound recordings magnetism /'maegna.tizm/ [12] magnetic

effects

magnetize /'maegnataiz/ [9] make a material magnetic

magneto-optical system /masg.netau 'optikl .sistam/ [16] recording system which uses magnetism to store the data and laser light to guide the read/write head

magnitude /'maegnitju:d/ [15] size given as a positive value

main switching centre /'mem switjirj ,senta(r)/ [27] cellular phone control station which uses a computer to control clusters and to connect them to the public telephone network

mains (supply), the /da 'meinz (sa.plai)/ [5] common source of high voltage AC electricity provided throughout most buildings

mains cable /'meinz ,keibl/ see mains lead mains cord /'meinz ka:d/ [21 ] see mains lead

mains lead /'meinz li:d/ [21 ] cable which connects an electrical device to the high voltage AC supply

mains outlet/'meinz .autlat/ [21] wall

socket for connection to the main high

Voltage ac electricity supply maintain /mem'tem/ [22, 29] keep in good

working order maintenance /'meintanans/ [29] cleaning

and adjusting of equipment to keep it in

good working order master /'ma:sta(r)/ n [6] main recording

which is used to produce many other

copies

master/'ma:sta(r)/ v [6] adjust the relative levels of each track when making an audio recording

master down /,ma:sta 'daun/ [6] feed a

multitrack recording back through a mixer

to adjust the relative levels of each track mastering machine /'ma.'starirj ma,fi:n/

[6] machine used for producing master

recordings matrix (pi = matrices) /'meitriks

('meitrasi:z)/ [8] complex arrangement of

wires which cross over each other at 90° MD /,em 'di:/ [6, 16] MiniDisc medium wave /'mi:diam weiv/ [10] range

of radio signal wavelengths between

approximately 100m and 1000m memory /'тетэп/ [15] electronic circuit

for storing information mercury switch /'im.'kjun switj/ [9]

electrical switch which uses the movement

of mercury to make or break the contacts metal detector /'metl di,tekta(r)/ [12]

electronic device for indicating the

presence of metal objects under the ground MF /,em 'ef/ [10] medium frequency:

frequency between 300kHz and 3 MHz MHz /'megabits/ [10, 11 ] megahertz

(millions of cycles per second) micro system /'maikrau .sistam/ [30]

system which uses a microprocessor microchip /'maikrautjip/ [8] small

electronic component which contains an