`
`
`tropospheric scatter
`
`
`
`er level
`(ELECTR| In a transponder, the min-
`!
`li
`placed a quarter-wavelength apart on a coaxial
`al above it in
`Ms ri input to the receiver which Is capable of
`line and adjusted in length to compensate for
`impedarce mismatch.{'trip-ol |stats tranz'for-
`causing a transmitter to emit a reply.
`( ‘trig-or
`dduction
`mor}
`lev-al }
`{
`Ithbs,j
`|ELtc| An electrical cable consisting
`triplexcable
`[ELECTR| A pulse that starts a cycle
`grigger pulse
`of three individually insulated wires that are
`of operation Also known as tripping pulse.
`MUNICations
`twisted together and covered by an outer layer
`| 'trig-ar pals }
`MpAtble fp
`of protective material
`—_{
`'trip,leks ,ka-bol }
`{eLec] A switeh that Is actuated by
`trigger switch
`or FeSeAton
`triptexer
`[ELECTR] Dual duplexer that permits the
`pulling a trigger. and is usually mounted in a
`[
`‘ttibys
`use of two receivers simultaneously and indepen-
`pistol-grip handle
`['trigar swich |
`dently ina radar system.
`{'tri,plek-sar}
`tigger tube
`|ELectr| A cold-cathode gas-filled
`charge of a
`triplex system [COMMUN| Telegraph system in
`tube In which one or more auxiliary electrodes
`laintain the
`which two messages in one direction and one
`initiate the anode current but do not control it
`Vf tka}
`message in the other direction can be sent
`{‘trigear tab |
`simultaneously overasingle circuit
`—_[
`'tri,pleks
`trigister
`[ELECTR] A pxpn device with a gating
`y transter of
`isis-tam }
`control acting as a fast-acting switch similar in
`12iN storage
`
`nature toathyratron._{tri'gis-tar } trlp magnet See phase magnet.{‘trip ,;mag-nat]
`k-lin }
`tripping device
`|ELECc| Mechanical or electro-
`trim [ELECTR] Fine adjustment of capacitance,
`tube
`{ty
`Magnetic device used to bring a circuit breaker
`inductance, or resistance of a component during
`orstarter to its off or open position, either when
`manufacture or after installation in a circuit
`-COre trans.
`certain abnormal electrical conditions occur or
`{trim }
`1 power-line
`when a catch is actuated manually
`—_{
`'trip-in di
`(ELEC| A relatively small vari-
`trimmer capacitor
`iVis }
`able capacitor usedin parallel with a larger vari-
`'trip-in ,pals }
`_{
`able or fixed capacitor to permit exact adjustment
`tripping pulse See trigger pulse
`trisistor
`(ELECTR} Fast-switching semiconductor
`of the capacitance of the parallel combination
`consisting of an alloyed junction pup device
`{'tim-or ka,pas-ed-ar}
`in which the collector is capable of electron
`[ELEC] A potentiometer
`trimmer potentlometer
`injection into the base; characteristics resemble
`which is used to provide a small-percentage
`those of a thyratron electron tube, and switching
`adjustment and is often used with a coarse
`time is in the nanosecond range
`_—_[ tri'zis-tar }
`control.
`{
`'tim-ar pa,ten-ché'am-ad-ar }
`trlode
`|ELEcTR] A three-electrode electron tube
`tristate logic
`|ELECTR|A form of
`transistor-
`transistor logic in which the output stages or
`containing an anode, a cathode, and a control
`electrode,
`{ 'tri,6d }
`input and output stages can assumethreestates;
`nput pulse
`two are the normal low-impedance | and O states,
`trlode clamp=[ELEcTR| A keyed clamp circuit uti-
`in a circuit
`and the third is a high-impedance state that
`lizing triodes, such as a circuit which contains a
`ow network
`allows manytristate devices to time-share bus
`complementary pairofbipolartransistors.
`{'trT
`lines.
`{
`'tri,stat 'laj-ik }
`.Od ‘klamp }
`ly with an
`etermined
`tri-tet
`oscillator
`|ELEcTR| Crystal-controlled,
`[ELECTR] A clipping circuit
`triode clipping circult
`ger 2A
`electron-coupled, vacuum-tubeoscillator circuit
`thatutilizes a transistor or vacuum triode
`—_{
`'trT
`whichis isolated from the output circuit through
`‘yan input
`.6d 'klip-in ,sar-kot }
`3.
`Sve
`use of the screen grid electrode as the oscillator
`triode laser
`[ELECTR] Gas laser whoselight out-
`anode; used for multiband operation because
`kat }
`put may be modulatedbysignal voltages applied
`it generates strong harmonics of the crystal
`to anintegral grid.
`('tri,Od 'la-zar}
`hyratrons,
`
`triode transistor frequency_{'tri,tet 'ds-9,lad-or }|ELECTR| A transistor that has
`
`a waythat
`troffer
`|ELEC| A long, recessed lighting unit hav-
`three terminals.
`{
`'tri,Gd tran'zis-tar }
`, but not
`ing its opening flush with the surface of the
`triple-conversion recelver
`[ELECTR] Communi-
`cations receiver having three different
`inter-
`ceiling and serving as a support and reflectorfor
`ree-layer
`3
`silicon-
`lamps.
`(‘traf-or }
`mediate frequencies to give higher adjacent-
`Trojan horse
`|compuT sci| A computer program
`channelselectivity and greater image-frequency
`switching
`breakover
`that has an unannounced (usually undesirable)
`suppression_{'trip-al kan,var-zhan ri,sé-var }
`so known
`function in addition to a desirable apparent
`triple detection
`See double-superheterodyne
`function.
`{ ,trd-jan ‘hors }
`5d}
`reception
`_{
`'trip-al di,tek-shan }
`
`triple-length working={compuT sci| Processing of trolley pole=|ELEC] The pole which conductselec-
`park gap
`reen two
`data by a computer in which three machine words
`tricity from the trolley wire to the trolley
`{'tral-é ,pal }
`ry trigger
`are used to represent each data item,
`in order
`are ap-
`to achieve the desired precision in the results
`trolley wire
`|ELEC] The means by which poweris
`{'trip-al {legkth 'wark-in }
`conveyed to an electric trolley locomotive,it is
`amplifier
`an overhead wire which conducts power to the
`triple modular redundancy=[comput sci| A form
`of redundancy in which the original computer
`locomotive by the trolley pole,
`_{
`'tral-@ ,wir}
`lek-tréd }
`arved
`in
`trombone
`|ELECTROMAG| U-shaped,
`adjustable,
`unit is triplicated and each of the three inde-
`fiers with
`coaxial-line matching assembly
`—_{ tramm'b6n }
`pendent units feeds into a majority voter, which
`‘urrent is
`outputs the majority signal.
`_{
`'trip-al 'maj-a-lor
`troposcatter
`Sve tropospheric scatter
`{
`'trdp-6
`remains
`iskad-ar }
`ti'don-dan-sé }
`ut then
`[ELECTROMAG| Micro-
`triple-stub
`transformer
`[COMMUN] Scatter propa-
`tropospherle scatter
`wave transformer
`in which three stubs are
`gation of radio waves caused by irregularities
`
`
`601
`
`Bap switch
`ig-a,tran }
`oto the first
`rogram has
`> known as
`lion, which
`by applying
`Is@ used to
`t
`3.
`See
`
`}h
`
`
`
`601
`
`

`

`|execrr| Any of the
`
`
`
`
`
`in the refractive index of air in the troposphere:
`lube coefficient
`used for long-distance communications, with
`that describe the characteristics ofat ONstants
`the aid of relay facilities, 180-300 miles (300-
`vacuum tube, such as amplificatiqn facneOhi
`500 kilometers) apart. Also known as troposcal-
`tual conductance, of alterating-curregot Mlle
`ter.
`jtrGpeatsfir-ik 'skad-ar|
`resistance
`| ‘Lib kG-ifish-anty
`"* Dlage
`tropospheric wave=[cOMMUN| A radio wavethat
`tube heating time=(ELECTR) Time eciulred
`is propagated by reflection’
`fram a region of
`tube to altain operating temperature
`for a;
`abrupt change in dielectric constant or its era-
`{héd-ig tim |
`Nb
`dient in the troposphere.—| {trGpealsfir-ik wav }
`tube noise=jeLecrre| Nolse ONBinating Ine
`trouble-location problam=(compusci] In com-
`uum tube, such as that due to shop
`ae.
`2 Yee
`t
`Ob elfe
`puters, a test problem used in a diagnastic
`and
`thermal agitation,
`{| 'tib ,noiz |
`ect
`toutine,—("trab-al latka-shon ,préb-lam }
`tube of flux Sre tube of force,
`(‘til ay ‘flaks
`troubleshoot
`§[compur Sci| To find and correct
`tube of force=[Lec] A region of SPace boy !
`errors and faults in a computer, usually in the
`bya tubularsurlace consistingofthe lines ae
`hardware—{ ‘trab-ol,shiit }
`Which pass through a given closed curve A
`true-motion radar
`|ELecTR| A radar set which
`known as tube af flux,
`(‘tik ay‘hors |
`Alig
`provides
` true-motion radar presentation
`tube tester
`|eLecTR| Atest Instrument destened
`on the plan-position indicator, as Opposed
`measureand Indicate thecondition ofelectron yy a
`ta the relative-motion, true-or-relative-bearing,
`usedin electranicequipment.
`| ‘tab Star}
`presentation most commonly used.
`[tril
`tube voltage drop)
`jELecre| In a 245 tube,
`imnG-shan‘radar
`anode voltage during the conducting Betiod
`true-motion radar presentation=[cLecre) Aradar
`['tlib "ySL-tij ,drap |
`plan-position indicator presentation in) which
`tube voltmeter
`See vacuum-tube
`voltmeter
`the center of the scope represents the same
`{ 'téb 'v6lt,mécl-ar}
`
`geographic position, until reset, with all Moving
`tubular capacitor=|evec| A paper or electrolyte
`objects, including the user's own cralt, moving
`capacitor having the form of a cylinder, with
`
`on the scope—( 'trid |m-shon 'ra,déir ,pres-an
`leads usually projecting axially from the ends; the
`itaeshan|
`
`capacitor plates are long strips of metal foil stip.
`{ ‘tri
`true motor load Srvthermal horsepower
`arated byinsulating strips,rolledinte a compact
`'m6d-or ,lGd }
`tubularshape.—['ti-bya-lar ka'pas-ad-ar |
`truncate=|coNnT svs| To stop a robotic process
`tunable echo box=[ELECTROMAG] Echo box con:
`before it has been completed.—| ‘tran, kat |
`sisting of an adjustable cayity operating in g
`truncated paraboloid=|e.ecrromac| Paraboloid
`single mode;
`if calibrated,
`the setting of the
`antenna in which a portion of the top and bottom
`plunger at resonance will
`Indicate the Wave.
`have been cut away to broaden the main lobe
`length.
` (‘tiisno-bal ‘eho |baks |
`in the vertical plane
`(
`'tron,kad-od pa'rabso
`tunable filter
`Jevecre| An electric filter in which
`iloid }
`the frequency of the passband or rejection band
`|&No| The error resulting [rom
`truneation error
`can be varied by adjusting its components,
`
`| ‘ti-na-bal 'fil-tar |]
`the analysis of a partial set of data in place of a
`complete or infinite set—( tran'ka-shan ear |
`tunable magnetron=|ELecTR| Magnetron which
`trunk
`jcomMMUN| A telephoneline connectingtwo
`can be tuned mechanically or electronically by
`central offices Also known as trunk circuit
`varying its capacitance or inductance
`—{
`'til-no.
`|compur sci] A path over which information is
`bal 'mag-na,tran |
`transferred ina computer—( trank |
`tune
`[ELECTR] To adjust for resonance at a de-
`trunk circuit See trunk.
`{
`'tragk ,sar-kat |
`sired frequency.
`{ tin)
`ex-
`trunk exchange
`jcomMuN|A telephone
`tuned amplifier
`|eLecte| An amplifier in which
`change whose main Ainction ts to interconnect
`the load is a tuned circuit; load impedance and
`
`trunks—{ 'trank iks'chanj }
`amplifier gain then vary with frequency.
`| {tind
`fam-pla,t-ar |
`trunk feeder
`|ELEc] An electric power transmis-
`sion line that connects two generating stations,
`[eiecte| A vacuurre-tube
`tuned-anode oscillator
`or a generating station and an important sub-
`oscillator whose frequency is determined by a
`station, or twoelectrical distribution networks.
`tank circuit in the anode circuit, coupled to rhe
`('tronk ,fed-or }
`gridto provide the requiredfeedback. Also known
`trunk group=[(COMMUN| The collection of trunks
`as tuned-plate oscillator
`{
`'tiind 'an,ad ,4s-0
`of a given type or characteristic that connect two
`\ldd-ar}
`switching pelts.
`|
`'trank ,grlip }
`tuned-anode tuned-grid osclilator Sve tuned-grid
`Fsection filter
`|ELEC|T network used as an
`tuned-anode oscillator.
`{ ‘tind 'an,éd 'tiind
` {
`electric filter
`'t@ ,sekeshon ifil-tor }
`‘pric ,ds-a,lacl-or |
`TSR See RAM resident
`tuned-baseoscillator
`[ELEctTR| Transistor oscil-
`
`T switch=[ELecTR] An electrical switch that joins lator in which the frequency-determining res-
`a machineto cither of two other devices
`{
`'té
`Onant circuit
`is
`located in the base circuit,
`iswich }
`comparable to a tuned-grid oscillator
`—_{ ‘tind
`TTL See transistor-transistor logic
`'bds ,4s-0,lad-ar }
`
`TTY Seeteletypewriter tuned cavity Sve cavity resonator._{'tiind 'kav-
`
`tube See electron tube—{‘tiib | ad-6 }
`
`
`
` tropospheric wave
`
`602
`
`602
`
`602
`
`

`

`
`
`tunnel diode
`
`| a
`
`‘ube voltmete;
`
`ELECTR] A gas tube having a heated
`tungar tube
`jELEeTR| Acireuil whosecomponents
`juned circuit
`thoriated tungsten filament serving as cathode
`be adjusted! to make the circult responsive to a
`and a graphite disk serving as anodein an argon-
`jarticular frequency In a tuning range. Also known
`filled bulb at a low pressure; used chiefly as a
`7
`INB-CUITeEnt
`astuning circuit
`[ itiind 'sar-kat|
`Plate
`tb)
`rectifier in battery chargers.
`{
`'tan,ar ,tiib }
`juned-collector oscillator
`[ELECTR] A transistor
`tungsten fllament
`[ELEC] A filament used in
`gsciilator in which the [requency-determining
`ie Tequired for
`incandescent Jamps, and as an incandescent
`resonantcircuit ts located in the collector circuit,
`verature,
`| ‘tig
`cathode in many types of electron tubes,
`this Is comparable toa tuned-anode electron:
`such as thermionic vacuum tubes.
`{
`'tan-stan
`inating ing v‘ac.
`
`wbe oscillator—| jLUind ka'lek-tar ,4s-3,lad-ar)
`‘fil-o-mant}
`» shot effect ang
`uned filter
`[ELECTR] Filter that uses one or more
`tungsten-halogen lamp
`[ELECTR] A lamp con-
`runed circuits to attenuate or pass signals at the
`taining a halogen, usually iodine or bromine,
`av 'flaks
`resonant frequency.
`| itiind"fil-tar }
`which combines with tungsten evaporated from
`space boy
`juned-grid oscillator§[evecte| Oscillator whose
`‘the linesofion
`the filament.
`{ iteg-stan 'hal-a-jan ,lamp }
`frequencyis determined by a parallel-resenant
`tuning
`|compuT sci| The use of various tech-
`circuit in the grid coupled to the plate to provide
`ased Curve. Alen
`niques involving adjustments to both hardware
`v'fdrs |
`thereguired feedback
`| |tind grid ,ds-,lad-ar|
`and software to improve the operating efficiency
`juned-grid tuned-anode oscillator
`|fLEcTR| A
`mentdesigned te
`of a computer system.
`—_| ELECTR] The process of
`yacuutt-tube oscillator whose frequencyis deter-
`ofelectra tubes
`adjusting the inductance or the capacitance (or
`mined by a tank circuit in the grid circuit, coupled
`‘tb testar |
`both) in a tunedcircuit, for example, in a radio,
`to the anode to provide the required feedback,
`the
`@ @as tube,
`television, or radar receiver or transmitter, so as
`Also known as tuned-anode tuned-grid oscillator.
`iducting Period,
`to obtain optimum performance at a selected
`| {tind ‘grid {tind ‘an,Gd 44s-a,lacl-ar |
`frequency,
`{ ‘tiin-in }
`tuned-plate oscillator See tuned-anode oselllator
`tuning capacitor
`[ELEC| A variable capacitor
`(itiind ‘plate as-o,lad-ar|
`used for
`tuning purposes.
`{
`'tun-ip ka,pas
`|pectr| A ra-
`tuned-radio-frequency receiver
`Or electralytie
`ad-or }
`dio receiver consisting of a number of amplifier
`a cylinder, with
`{'tiin-in ,sar-kat }
`tuning circuit Seetunedcircuit.
`stages that are tuned to resonance at
`the
`amthe ends, the
`tuning coil
`[eLec| A variable inductance coil for
`carrier
`frequency of the desired signal by a
`if metal foil Sep.
`adjusting the frequencyof an oscillator or tuned
`gang capacitor;
`the amplified signals at
`the
`{into a compact
`circuit,
`{
`'tiin-in ,koil }
`das:od-or}
`original carrier frequency are led directly into
`tuning core
`[ELECTROMAG| A ferrite core that is
`the detectar for demodulation, and the resulting
`Echo box con-
`designed to be moved in and out of a coil or
`audio-frequency signals are amplified by an
`operating in a
`transformer to vary the inductance.{'tiin-in
`audio-frequency amplifier and reproduced by a
`setting of the
`ikor}
`cate the wave-
`loudspeaker. Abbreviated TRF receiver,
`{ itiind
`'tdd-€o jfré-kwon-sé ri,sé-var}
`[ELECTR] A device that indicates
`tuning Indicator
`when a radio receiver is tuned accurately to a
`[ELECTR| A
`tuned-radio-frequency transformer
`filter in which
`station; itis connected toacircuit having a direct-
`transformer used for selective coupling in radio-
`“rejection band
`S components,
`current voltage that varies with the strength of
`frequency stages.
`{ jtiind 'rad-éo jfré-kwan-sé
`tranz,foremar }
`the incoming carrier signal,
`{
`'tiin-ip ,in-do
`ikad-or}
`See vibrating-
`tuned-reed frequency meter
`|ELECTR] The frequency range over
`reed-frequency meter
`—_{ jtiind 'réd ‘fré:kwan-sé
`tuning range
`which a receiver or other piece of equipment
`iméd-ar}
`can be adjusted by means of a tuning control
`|ELEC| A relay having mechanical
`tuned relay
`(‘tiin-ig ,ranj }
`resonating arrangements that
`limit
`or other
`tuning screw [ELECTROMAG| A screw that is in-
`response to currents at one particular frequency
`serted into the top or bottom wall of a waveguide
`{ {tind 'ré,]a }
`and adjusted as to depth of penetration inside
`|ELECTROMAG] Resonat-
`tuned resonating cavity
`for
`tuning or
`impedance-matching purposes.
`ing cavity halfa wavelength longorsome multiple
`{ ‘tiin-in ,skrii}
`of a half wavelength, used in connection with a
`tuning stub [ELECTROMAG| Short length of trans-
`waveguide to produce a resultant wave with the
`mission line, usually shorted at
`its free end,
`amplitude in the cavity greatly exceeding that of
`connected to a transmission line for impedance-
`the wave in the waveguide,
`_{ it(ind 'rez-an,4d-in
`matching purposes.
`{
`'tlin-in ,stab }
`ikav-ad-é }
`tuning susceptance
`[ELECTR] Normalized sus-
`{ELEC| Transformer whoseas-
`tuned transformer
`sociated circuit elements are adjusted as a whole
`ceptance of an anti-transmit-receive tube in its
`mount due to the deviation of
`its resonant
`to be resonant at the frequencyof the alternating
`frequency from the desired resonant frequency
`current supplied to the primary, thereby causing
`{'tGn-ig sa,sep-tans }
`the secondary voltage to build up to higher values
`tuning wand
`|ELEC| Rod of insulating material
`than would otherwise be obtained
`{
`jtiind
`having a brass plug at one end and a powerediron
`tranz'for-mor |
`core at the other end; used for checking receiver
`that
`receiver
`tuner
`|ELEcTR| The portion of a
`contains circuits which can be tuned to accept
`alignment.
`[
`'tiin-in ,wand }
`tunnel diode
`(ELEcTR] A heavily doped junction
`the carrier frequency of a desired transmitter
`diode that has a negative resistance at very
`while rejecting the carrier frequencies ofall other
`low voltage in the forward bias direction, due
`stations on the air at that time
`{
`'ti-nar}
`
`|c
`
`ignetron which
`lectronically by
`ance
`_[
`'tii-na-
`
`nance at a de-
`
`dlifier in which
`mpedance and
`Jency.
`_{ {ttind
`A vacuum-tube
`‘termined by a
`coupled to the
`ick Also known
`id 'an,Gd ,as-o
`
`See tuned-grid
`'an,6d_ jtiind
`
`I
`
`ansistor oscil-
`termining res-
`base circuit;
`lator
`{ Itlind
`
`{ :tUnd 'kav-
`
`603
`
`603
`
`
`
`603
`
`

`

`tunneling cryotron
`
`to quantum-mechanical tunneling, and a short
`turn-off time=[ELecTR] The time thar [sg
`In check {cc
`circuit in the negative bias direction Also known
`gate cireuit to shut off a current
`('t
`tak
`a
`computer oper
`sa anya
`Arn Gh
`pe
`
`as Esaki tunnel diode
`{
`'tan-al ,di,6d }
`
`turn-on time=£LecTR] The time that It tiny
`al equipment
`
`a
`tunnelling cryotron§(ELEcTR| A low-temperature
`gate circult to allow a current to reach
`results.
`("tw
`
`value=['tarn,on tim }
`current-controlled switching device that has two
`Its iiy))
`wineT filter
`(E
`
`electrodes of superconducting material sepa-
`turns ratio
`|ELEC| The ratio of the
`Of
`of a parallel-T
`rated by an insulating film, forming a Josephson
`turns In a secondary winding of a
`translarmey
`
`elements chos
`1
`to the number af turns in the
`pri
`wt
`c
`junction, and a control
`line whose currents
`| 'tarnz ,ra-sh|
`Primsty Winding
`
`due to each ¢
`generate magnetic fields that switch the device
`
`specified freqt.
`between two states characterized by the presence
`turnstile Srtarae
`[ELECTROMAG] An
`
`or absence ofelectrical resistance
`{
`'tan-al-ig
`win-T network:
`consisting of one or more layers
`:
`
`horizontal dipoles on a mast, usually=o
`'kri-o,tran }
`ie retiwark|
`
`so the currents In the two dipoles of
`pated
`See scanning tunneling
`tunneling microscope
`twist
`[ELECTRO
`microscope.
`_{
`'ton-al-in 'mi-kra,skdp}
`there isa progl
`equal and in quadrature; used with televise:
`
`frequency modulation, and other very-hiet
`tunnel
`junction
`|ELEcTR| A two-terminal elec-
`about the lor
`
`tronic device having an extremely thin potential
`frequency or ultra-high-frequeney transmits”
`twist }
`
`barrier to electron flow, so that the transport
`obtain an essentially omnidirectiong| radiate
`|
`twisted palr
`characteristic (the current-voltage curve) is pri-
`pattern,
`| ‘tarnystil anjten-a
`1On
`small
`insulat
`
`marily governed by the quantum-mechanical
`turntable.
`[ENG Acaus| The rotatine
`pl
`without a co
`which a disk record is placed feeecon On
`
`tunneling process which permits electrons to
`copper pair
`play
`penetrate the barrier
`{
`'tanval ,jank-shen }
`layback.
` {
`'tarn,ta-bal}
`8 or
`twist-lock cont
`
`tunnel rectifier
`[ELECTR] Tunnel diode having a
`turret tuner=|eLecTR| A television’ tuner havin
`
`receptacle iny
`telatively low peak-current rating as compared
`one set of pretuned circuits for each channer
`insertion to le
`
`with other tunnel diodes used in memory-circuit
`mounted on adrum thatis rotated by the chann j
`plug accident
`applications
`{'ton-ol ,rek+ta,fl-ar }
`
`selector; rotation of the drum connects cael
`Jak ka'nek-tor,
`tunnel resistor
`(ELECTR{ Resistor in which a thin
`
`set of tuned circuits in turn to the ecelyar
`two-address cr
`layer of metal is plated across a tunneling junction, to
`antenna circuit, radio-frequency amplifier;and rf
`code using tv
`give the combined characteristics of a tunnel diode
`oscillator=['ta-rat ;ti-nar|
`
`res kd }
`and an ordinary resistor
`{
`'ton-ol ri,zis-tor }
`turtle=[compeuT scil A cursor with the attributes
`
`two-address I!
`tunnel
`triode
`|ELEcTR] Transistorlike device in
`of both position and direction, usually, an arrow
`
`which the emitter-base junctionis a tunnel diode
`puters, an in
`that points in the direction it is about to moye
`
`ation and spe
`and the collector-base junction is a conventional
`and generatesa line along its path
`| ‘tareal |
`
`diode.
`('tan-al ,tri,dd }
`{ ‘ti 'ad resif
`tutorial
`jcomrun sci] A method of computer:
`tuple=(comput sci] A horizontal row of data items
`two-dimenslon
`assisted instruction that involves a collection of
`
`sistor
`See
`in a relational data structure; corresponds to
`screen formats, generally arrangedin sequences
`
`a
`record or segment
`in other types of data
`that can be selected from a menu, and presented
`{ ti di'men:s
`
`structures,
`{'ti-pal}
`'zis-tor}
`in response to the terminal operator's request
`
`(ti'toréal ]
`turbIne generator
`[ELEC] An electric generator
`two-dimensior
`TV See television
`
`driven by a steam, hydraulic, or gas turbine
`access stora
`{
`'tar-bon ,jen-o,rad-ar}
`[comput scl] In optical char-
`TV camera scanner
`locations ass
`
`turboalternator
`|ELEc| An alternator, such as a
`acter recognition, a device that images an in-
`to be physi¢
`synchronous generator, which is driven by a
`put character onto a sensitive photoconductive
`taken from ¢
`steam turbine
`—_{ jtar-bd'ol-tor,nad-or }
`
`target of a camera tube, thereby developing an
`'men-shan-al
`Turlng machine
`|compuT sci] A mathematical
`electric charge pattern on the inner surface of the
`
`two-gap head
`idealization of a computing automaton similar
`target, this pattern is then explored by a scanning
`
`magnetic ta]
`in some ways to real computing machines; used
`beam which traces out a rectangular pattern
`other for rec
`by mathematicians to define the concept of
`with the result that a waveform is produced
`
`two-hoptrans:
`computability
`{
`'tur-in ma,shén }
`which represents the character's most probable
`
`tadio waves
`identity
`{ té'vé |kam-ro ,skan-or}
`{‘tarn}
`turn)
`|ELEC| One complete loop of wire.
`TVI Sce television interference
`from the io!
`turnaround system [comput sci| In character
`
`recognition, a system in which the input data
`TVRO Seetelevision receive only antenna
`ground, and
`
`to be read have previously been printed by the
`tweeter
`[ENG Acous| A loudspeaker designed to
`again before
`
`computer with which the reader is associated; an
`handle only the higher audio frequencies, usually
`tranz'mish-3
`
`applicationis invoice billing and the subsequent
`those well above 3000 hertz; generally used in
`two-Input suk
`
`conjunction with a crossover network and a
`recording of payments, Also known as reentry
`lin, put sab'tt
`
`system.
`{'tarn-a,ralind ,sis-tam }
`woofer.
`{
`'twéd-ar }
`two-level sub
`
`turnaroundtime=|compuTsci| The delay between
`twin arithmetic units
`|compur sci] A feature of
`in which ent
`
`submission of a job for a data-processing system
`some computers wherethe essential portions of
`subroutine.
`
`andits completion
`{
`'tarn-a,raund ,tim }
`the arithmetic section are virtually duplicated.
`two-out-of-flv
`
`
`turnkey=[comput sci] A complete computersys- { ‘twin o'rith-moa,tik ,yii-nots }
`of the decir
`tem delivered to a customer in running con-
`
`twin axial cable=|coMMUN| A transmission line
`having the
`dition, with all necessary premises, hardware
`consisting of two coaxial cables enclosed within
`contains twe
`
`and software equipment, supplies, and operating
`a single sheath, each used to transmit signals in
`'kod }
`personnel={'torn,ké J
`one direction
`{
`'twin 'ak-séa! 'ka-bal }
`
`
`
`
`604
`
`

`

`
`
`
`
`
`
`two-pulse canceler
`
` |
`
`18 takes
`Orn GF tim
`lt takes a
`tach its ful]
`
`|commun| Randomized code con-
`two-part code
`win check (compuT scl) Continuous check of
`sisting of an encoding section in which the
`computer operation, achieved by the duplication
`plain text groups are arranged in alphabetical
`of equipment and automatic comparison of
`or other significant order accompanied bytheir
`results,
`| ‘twin ‘chek }
`code groups in nonalphabetical orrandomorder,
`qwin-T filter
`[ELec| An electtic filter consisting
`anda decoding section in which the code groups
`of a parallel-T network with values of network
`Number of
`are arranged in alphabetical or numerical order
`elements chosen In such a way that the outputs
`and are accompanied by their meanings given in
`transformer
`due to each of the paths precisely cancel ata
`the encoding section,
`{ ‘tui ‘part ‘kad}
`ary Winding,
`specilled frequency
`{twin 't@ fil-tar |
`two-pass compiler=|compu' scl| A language pro-
`1
`antenna
`twine network
`See parallel-T network,
`| ‘twin
`cessor that goes through the program to be
`of Crossed
`translated twice; on the first pass it checks the
`te wnetiwark |
`ly energizad
`jwist
`[ELECTROMAG] A waveguide section in which
`syntax of statements and constructs a table of
`ita pair are
`symbols, while on the second pass it actually
`thereisa progressive rotation of the cross section
`} television
`translates program statements Into machine
`about
`the longitudinal axis of the waveguide
`| very-high.
`language.
`| ‘ti |pas kam'pil-ar }
`{ twist }
`Nsmitlers to
`jeurc| A
`two-phase alternating-current circult
`twa
`[eLec| A cable composed of
`twisted palr
`cireuit in which there are two alternating currents
`al radiation
`small
`insulated conductors twisted together
`on separate wires, the two currents being 90°
`without a common covering. Also known as
`outofphase
`(‘td faz 'Ol-tarndelig ka-rant sor
`copper pair
`| ‘twis-tad ‘per }
`kat )
`twist-lack connector
`|ELEC| & power plug and
`delivered
`(ELEC) Current
`current
`two-phase
`jeceptacle in which the plug must be twistedalter
`uner having
`a phase
`through two pairs of wires or at
`ich channel,
`insertion to lockit in place, to guardagainst the
`difference of one-quarter cycle (90°) between
`‘the charinet
`plug accidentally being knocked loose.
`{ ‘twist
`the current in the two pairs.{'tii f@z'ko-rant )
`Anects each
`two-phase five-wire system [ELEC] System of
`lak ka'nek-tar }
`the receiver
`alternating-current supply comprising five con-
`two-address code=|compPur sci| In computers, a
`lifer, and r-f
`ductors, four of which are connected asin a two-
`code using two-address Instructions,—| ‘ti ‘ad
`phase four-wire system. the fifth being connected
`res kod |
`le attributes
`tothe neutral points ofeach phase.—{'tU jfaz'fiv
`two-address instruction |comPur sci] In com-
`lly, an arrow
`wir 'sis-tam |
`puters, arvinstruction which inclucles an oper-
`Out to move
`two-phase four-wire system |EL&c| System of
`ation and specilies the location of two registers
`{
`'terd-al}
`alternating-current supply comprising two pairs
`\'t ‘adres in,strak-shan }
`f computer-
`af conductors, between one pair of which is
`collection of
`two-dimensional electron gas field-effect tran-
`maintained an alternating difference of potential
`n sequences
`sistor
`Se high-electron-mobility transistor
`displaced in phase by one-quarter of a period
`id presented
`{ UU di'men-shan-aliflektran ‘gas {féld iifekttran
`fram an alternating difference of potential of the
`or's request
`‘ais-for}
`same frequency maintained between the other
`two-dimensional storage {COMPUTsci] A direct-
`pair
`[ ‘td {fSz for {wir 'sistam |
`access storage device in which the storage
`two-phase three-wire system [ELEC] System of
`optical char-
`locations assigned toaparticular file do not have
`alternating-current supply comprising three con-
`yages an in-
`ductors, between one of which (known as the
`to be physically adjacent, but instead may be
`roconductive
`commion return) and each ofthe other two are
`taken from one or tmore seek areas.
`{
`‘tui
`idi
`aveloping an
`tnaintained alternating difference of potential
`\men-shan-al ‘stor-ij }
`surface of the
`displaced in phase by one-quarter of a period
`dy a scanning
`two-gap head=|compur sci] One of two separate
`with relation to each other.
`{ ‘tii [faz 'thré (wir
`magnetic tape heads, one for reading and the
`‘ular pattern
`‘gisetam ]
`other lor recording data.
`|
`'tU tgap 'hed |
`is produced
`two-plus-one address Instructlon§{comPUT scl]
`two-hoptransmisslon
`|coMMUN| Propagation of
`ost probable
`‘An instruction in a computer program which
`radio waves in which the waves are reflected
`has two addresses specifying the locations of
`from the ionosphere,
`then reflected from the
`operands and one address specifying the location
`ground, and then reflected from the ionosphere
`in which the result is to be entered.
`{ ‘ti ,plos
`again before reaching the receiver
`{ ‘tli [hap
`‘wart ‘adres injstrak-shan |
`tranz'mish-an }
`two-port
`junction {ELEcTROMAG] A waveguide
`two-Input subtracter
`junction with two openings: It can consist either
`tin,put sab'trak-tor}
`ofadiscontinuity orebstacle ina waveguide, or of
`[comput sci] A subroutine
`two-level subroutine
`two essentially different waveguides connected
`A feature of
`in which entry is made to a second, lower-level
`together.
`(‘ti {port ‘jank-shan }
`al portionsof
`subroutine.
`{
`'tii lev-al 'sab-rii,tén }
`two-port system=[cont sys] Asystem whieh has
`y duplicated.
`two-out-of-flve code
`[comput sci] An encoding
`only one input or excitation and only one
`response or qutput.
`(ti |port 'sis-tam |
`of the decimal digits using five binary bits and
`smission line
`two-pulse canceler
`|ELECTr| A moving-target in-
`having the property that every code element
`closed within
`dicator canceler which compares the phase
`eens two I's and three 0's,
`{
`'tii aud av iflv
`mit signals in
`variation of two successive pulses received from
`ad j
`
`platform on
`‘ecording of
`
`anna
`‘ designed to
`acies, usually
`rally used in
`twork and a
`
`-bal }
`
`Sve half-subtracter
`
`—{ "ti
`
`605
`
`605
`
`605
`
`

`

`
`
`two-quadrant multiplier
`
`
`a target; discriminates against signals with radial
`‘
`(comput sci| A tempor
`typeahead buffer
`age device in a keyboard or mictocompite Stor.
`velocities which produce a Doppler frequency
`holds information typed onthe keyboaydiy thay
`equal
`to a multiple of
`the pulse repetition
`the central processing unit is ready to neonte
`frequency.
`{ ‘ti jpals ‘kanvslor }
`('tip-a,hed‘baf-ar |
`SPL lt
`two-quadrant multipller=|comput sci| Of an ana-
`log computer, a multiplier in which operation is
`type Awave See continuous wave=| ‘tip taw
`type AT wave
`[COMMUN] An
`oun modieek
`restricted to a single sign of one input variable
`keyed, continuous wave,
`| ‘tp latwonwaye
`d
`only
`{ ‘tii |kwadsrant 'mol-to,plt-ar J
`type A2 wave
`|COMMUN| A modulated haw,
`two-source frequency keyIng
`[COMMUN] Keying
`continuous wave.
`['tip\aitti wayy Ved,
`in which the modulating wave shifts the out-
`type A3 wave
`|COMMUN|A continuous
`put
`frequency between predetermined values
`Waye
`modulated by music, speech, or other
`derived from independent sources,
`{ ‘tii
`|sors
`SOunels.
`('tip laithré wav J
`‘fré-kwon-sé ,ké-in }
`type
`Ad
`wave
`|[comMMUN;A
`5)
`[COMPUTScl| A varia-
`two-state Turing machine
`frequency-modulated continuays waveacd
`tion of a Turing machinein which only twostates
`
`in facsimile systems—| 'tip jailar way | sed
`
`UART Scet
`are allowed, although the number of symbols
`mitter
`{
`may be large
`{ ‘ti [stat 'tur-in mo,shén }
`type AO wave
`[COMMUN | A composite transry)
`Uda antenni
`sion and continuous wave that is not type Ay Ai
`two-symbol Turing machine=|comPuTsci] A vari-
`jten-o }
`ation of a Turing machine in which only two
`AR, Ad, or AS wave.
`(‘Nip iainin wav]
`hee
`UDP See us
`symbols are permitted, although the number of
`type B wave=|coMMUN| A keyed, damped way
`| ‘Tip ibé wav |
`e
`Uformat
`[¢
`states may be large
`( ‘tii
`|sim-bal ‘turin mo
`input/outg,
`ishén }
`type drum=|compur scl) A steel olindar con:
`unknown @
`two-tone keying
`§[commuN| Keying in which the
`taining 128 to 144 lateral bands, each band
`UHF See ult
`modulating wave causesthe carrier to be mod-
`containing the alphabet,
`the digits 0-9. and
`UJT See un)
`ulated with one f