They may be as basic as pictures on a board that the are used to request food, drink, or other care ; or they can be advanced speech generating devices, based on speech synthesis, that are capable of storing hundreds of phrases and words.

The quipu of the Incas was a system of knotted cords used to record numerical data, like advanced tally sticks – but not used to perform calculations.

In addition, Ampère used his access to the latest mathematical books to begin teaching himself advanced mathematics at age 12.

Lacaille and Johann Bode each depicted Antlia differently, as either the single-cylinder vacuum pump used in Papin's initial experiments, or the more advanced double-cylinder version.

Arithmetic or arithmetics ( from the Greek word ἀριθμός, arithmos " number ") is the oldest and most elementary branch of mathematics, used by almost everyone, for tasks ranging from simple day-to-day counting to advanced science and business calculations.

Plastics are made from fossil hydrocarbons, and carbon fiber, made by pyrolysis of synthetic polyester fibers is used to reinforce plastics to form advanced, lightweight composite materials.

However, this might be an advanced warning that 1024 bit RSA used in secure online commerce should be deprecated, since they may become breakable in the near future.

Currently, even blades made of advanced metal alloys used in the engines ' hot section require cooling and careful limiting of operating temperatures.

A recent study revealed the use of such advanced tools as spears, which West African chimpanzees in Senegal sharpen with their teeth, being used to spear Senegal bushbabies out of small holes in trees .< ref >

* An abacus was created sometime between 1000 BC and 500 BC, it later become a form of calculation frequency, nowadays it can be used as a very advanced, yet basic digital calculator that uses beads on rows to represent numbers.

In the struggle to become a technology hub, many cities and states used tax money to fund technology conference centers, advanced infrastructure, and created favorable business and tax law to encourage development of the dot com industry in their locale.

These electrodes are used for advanced purposes in research and investigation.

ETC increases the performance of conventional solid propellants, reduces the effect of temperature on propellant expansion and allows for more advanced, higher density propellants to be used.

ETC increases the performance of conventional solid propellants, reduces the effect of temperature on propellant expansion and allows for more advanced, higher density propellants to be used.

Furigana are most commonly used in works for children, who may not have sufficiently advanced reading skills to recognize the kanji, but can understand the word when written phonetically in hiragana.

The 1949 Principles of the International Phonetic Association recommends using 10px for advanced voiced velar plosives ( denoted by Latin small letter script G ) and 10px for regular ones where the two are contrasted, but this suggestion was never accepted by phoneticians in general, and today ⟨ 10px ⟩ is the symbol used in the International Phonetic Alphabet, with ⟨ 10px ⟩ acknowledged as an acceptable variant, and is more often used in printed materials.

It was also used as a secondary weapon if the main shaft snapped, or for the rear ranks to finish off fallen opponents as the phalanx advanced over them.

Other advanced techniques, such as nonradioactive in situ hybridization, can be combined with immunochemistry to identify specific DNA or RNA molecules with fluorescent probes or tags that can be used for immunofluorescence and enzyme-linked fluorescence amplification ( especially alkaline phosphatase and tyramide signal amplification ).

available in many advanced Database Management Systems, simple file permissions provided in the UNIX and Windows operating systems, Group Policy Objects provided in Windows network systems, Kerberos, RADIUS, TACACS, and the simple access lists used in many firewalls and routers.

* The librarian can briefly teach the user how to use the catalogue and how to use its advanced features, or recommend the proper subject words or terms that are used in the catalogue for the topic the user has in mind.

The term lunatic was also used by supporters of John Harrison and his marine chronometer method of determining longitude to refer to proponents of the Method of Lunar Distances, advanced by Astronomer Royal Nevil Maskelyne.

Although photolithographic technology is the most commercially advanced form of nanolithography, other techniques are also used.

:* Semiconductor materials and semiconductor devices, for a specialized understanding of the advanced processes used in industry ( e. g. crystal growth techniques, thin-film deposition, ion implantation, photolithography ), their properties, and their integration in electronic devices

Another use of roleplaying for evaluation illustrates how this procedure can be used in real life situations without special equipment or special assistants during the daily course of work.

For example, property `` used in the trade or business '' of a transferor corporation, as defined in section 1231, presumably would not retain its special status following a non-taxable reorganization if it is not so used in the business of the acquiring corporation.

The " space " character had to come before graphics to make sorting easier, so it became position 20 < sub > hex </ sub >; for the same reason, many special signs commonly used as separators were placed before digits.

When written in Devanagari, Vedic Sanskrit has an alphabet of 53 letters, including the visarga mark for final aspiration and special letters for kš and jñ, though one of the letters is theoretical and not actually used.

There are no regional variations, because this special written form has mainly been used by a government that has now for centuries been based in Vienna.

It lacks the NH < sub > 2 </ sub > group because of the cyclization of the side-chain and is known as an imino acid ; it falls under the category of special structured amino acids .</ ref > where R is an organic substituent known as a " side-chain "); often the term " amino acid " is used to refer specifically to these.

It was supposed to have special healing properties, and, as a symbol of immortality, was used to decorate images of the gods and tombs.

Finished in black lacquer, the stools are used to seat customers at the ' Genius Bar ' and also in other areas of the store at times when seating is required for a product workshop or special event.

An automatic number announcement circuit ( ANAC ) is a special telephone number that is meant to be used by phone company technicians and other telecommunications technicians to determine the phone number of a particular line.

The theory of special relativity predicts that any such device would allow communication from the future to the past, which raises problems of causality, unless the device used general relativistic curved spacetimes as an integral part.

A special version of NewDos / 80, ( an improved TRS-DOS compatible Disk operating system ) was used to support these disk capacities when using the TRS-80 compatibility mode.

A third mode was entered with a special boot floppy which turned the Aster into a Videotex terminal with a 40x25 display and a Videotex character set, The software used the built in RS232 interface of the Aster to control a modem through which it could contact a Prestel service provider.

Another important demand was that the computers could be used in a network ( Aster developed special software and hardware for that ).

Because the original designer had left the company another employee completely redesigned most of the system, ( adding a display snow remover circuit, true 80 / 64 column text mode support, ( with different size letters for TRS-80 and CP / M mode, so that in TRS-80 mode the full screen was also used, not just a 64x16 portion of the 80x25 screen ) with an improved font set ( adding " gray scale " version of the TRS-80 mozaik graphics and many special PETSCII like characters ), and a more flexible and reliable floppy disk controller and keyboard interface plus many other small improvements ), also an enclosure was developed for the main computer system, ( in the form of a 19-inch rack for the Eurocards ) and for two floppy disk drives and the power supply.

Furthermore, they claim that in the Bible there's no evidence showing that the office must be conveyed by laying on of hands and no Biblical command that it must be by a special class of bishops ( the laying on of hands is repeatedly used to give a commission to some person in scripture.

Other atomizers, such as glow-discharge atomization, hydride atomization, or cold-vapor atomization might be used for special purposes.

Aircraft with special characteristics that give them unique capabilities will often display those in their demos ; For example, Russian fighters with Thrust vectoring may be used to perform Pugachev's Cobra or the Kulbit, among other difficult manoeuvers that cannot be performed by other aircraft.

The term acquired a special significance in the philosophy of Immanuel Kant ( 1724 – 1804 ), who used it to describe the equally rational but contradictory results of applying to the universe of pure thought the categories or criteria of reason that are proper to the universe of sensible perception or experience ( phenomena ).

In RF linear Power Amplifiers, such as cellular base stations and broadcast transmitters, special design techniques can be used to improve efficiency.

A special case of the Boltzmann distribution, used for describing the velocities of particles of a gas, is the Maxwell – Boltzmann distribution.

BRP was used ( through a special arrangement with Swedish Fredrik Malmberg ) as the base for the highly successful Swedish game Drakar och Demoner from Target Games.

The bilinear transform is a special case of a conformal mapping ( namely, the Möbius transformation ), often used to convert a transfer function of a linear, time-invariant ( LTI ) filter in the continuous-time domain ( often called an analog filter ) to a transfer function of a linear, shift-invariant filter in the discrete-time domain ( often called a digital filter although there are analog filters constructed with switched capacitors that are discrete-time filters ).

Mockup of the pneumatic bogie system of a MP 89 carriage used on the Paris Métro Line 14 | Meteor metro, showing the two Wheelset ( rail transport )# Special wheelsets | special wheelsets