76 relations: Abacus, Alphanumeric, Analog signal, Analog-to-digital converter, ASCII, Beacon, Bell Labs, Binary number, Braille, Capitalization, Central processing unit, Character (computing), Character encoding, Code, Compact Cassette, Comparison of analog and digital recording, Compressibility, Computer keyboard, Computing, Continuous function, Data (computing), Data at rest, Data in transit, Data in use, Data transmission, Digit (anatomy), Digital architecture, Digital art, Digital audio, Digital control, Digital divide, Digital electronics, Digital infinity, Digital native, Digital photography, Digital physics, Digital recording, Digital Revolution, Digital video, Digital-to-analog converter, DNA, Electrical telegraph, Electronics, Error detection and correction, Finger, Flag semaphore, Formal language, Genetic code, George Stibitz, Granularity, ..., Home computer, Information Age, Information security, Information system, Information theory, International maritime signal flags, Internet forum, Interrupt, Joystick, Latin, Letter (alphabet), MIT Press, Modem, Modulation, Morse code, Noise (signal processing), Number, Pausa, Polling (computer science), Punctuation, Quantization (signal processing), Representation (mathematics), Sampling (signal processing), Science (journal), Smoke signal, Syncword. Expand index (26 more) » « Shrink index
The abacus (plural abaci or abacuses), also called a counting frame, is a calculating tool that was in use in Europe, China and Russia, centuries before the adoption of the written Hindu–Arabic numeral system.
Alphanumeric is a combination of alphabetic and numeric characters, and is used to describe the collection of Latin letters and Arabic digits or a text constructed from this collection.
An analog signal is any continuous signal for which the time varying feature (variable) of the signal is a representation of some other time varying quantity, i.e., analogous to another time varying signal.
In electronics, an analog-to-digital converter (ADC, A/D, or A-to-D) is a system that converts an analog signal, such as a sound picked up by a microphone or light entering a digital camera, into a digital signal.
ASCII, abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication.
A beacon is an intentionally conspicuous device designed to attract attention to a specific location.
Nokia Bell Labs (formerly named AT&T Bell Laboratories, Bell Telephone Laboratories and Bell Labs) is an American research and scientific development company, owned by Finnish company Nokia.
In mathematics and digital electronics, a binary number is a number expressed in the base-2 numeral system or binary numeral system, which uses only two symbols: typically 0 (zero) and 1 (one).
Braille is a tactile writing system used by people who are visually impaired.
Capitalisation, or capitalization,see spelling differences is writing a word with its first letter as a capital letter (upper-case letter) and the remaining letters in lower case in writing systems with a case distinction.
A central processing unit (CPU) is the electronic circuitry within a computer that carries out the instructions of a computer program by performing the basic arithmetic, logical, control and input/output (I/O) operations specified by the instructions.
In computer and machine-based telecommunications terminology, a character is a unit of information that roughly corresponds to a grapheme, grapheme-like unit, or symbol, such as in an alphabet or syllabary in the written form of a natural language.
Character encoding is used to represent a repertoire of characters by some kind of encoding system.
In communications and information processing, code is a system of rules to convert information—such as a letter, word, sound, image, or gesture—into another form or representation, sometimes shortened or secret, for communication through a communication channel or storage in a storage medium.
The Compact Audio Cassette (CAC) or Musicassette (MC), also commonly called the cassette tape or simply tape or cassette, is an analog magnetic tape recording format for audio recording and playback.
Sound can be recorded and stored and played using either digital or analog techniques.
In thermodynamics and fluid mechanics, compressibility (also known as the coefficient of compressibility or isothermal compressibility) is a measure of the relative volume change of a fluid or solid as a response to a pressure (or mean stress) change.
In computing, a computer keyboard is a typewriter-style device which uses an arrangement of buttons or keys to act as mechanical levers or electronic switches.
Computing is any goal-oriented activity requiring, benefiting from, or creating computers.
In mathematics, a continuous function is a function for which sufficiently small changes in the input result in arbitrarily small changes in the output.
Data (treated as singular, plural, or as a mass noun) is any sequence of one or more symbols given meaning by specific act(s) of interpretation.
Data at rest in information technology means inactive data that is stored physically in any digital form (e.g. databases, data warehouses, spreadsheets, archives, tapes, off-site backups, mobile devices etc.). Data at rest is used as a complement to the terms data in use and data in transit which together define the three states of digital data (see Figure 1).
Data in transit is defined into two categories, information that flows over the public or untrusted network such as the internet and data which flows in the confines of a private network such as a corporate or enterprise Local Area Network (LAN).
Data in use is an information technology term referring to active data which is stored in a non-persistent digital state typically in computer random-access memory (RAM), CPU caches, or CPU registers.
Data transmission (also data communication or digital communications) is the transfer of data (a digital bitstream or a digitized analog signal) over a point-to-point or point-to-multipoint communication channel.
A digit is one of several most distal parts of a limb, such as fingers or toes, present in many vertebrates.
Digital architecture uses computer modeling, programming, simulation and imaging to create both virtual forms and physical structures.
Digital art is an artistic work or practice that uses digital technology as an essential part of the creative or presentation process.
Digital audio is audio, or simply sound, signal that has been recorded as or converted into digital form, where the sound wave of the audio signal is encoded as numerical samples in continuous sequence, typically at CD audio quality which is 16 bit sample depth over 44.1 thousand samples per second.
Digital control is a branch of control theory that uses digital computers to act as system controllers.
A digital divide is an economic and social inequality with regard to access to, use of, or impact of information and communication technologies (ICT).
Digital electronics or digital (electronic) circuits are electronics that operate on digital signals.
Digital infinity is a technical term in theoretical linguistics.
The term digital native describes a person that grows-up in the digital age, rather than acquiring familiarity with digital systems as an adult, as a digital immigrant.
Digital photography is a form of photography that uses cameras containing arrays of electronic photodetectors to capture images focused by a lens, as opposed to an exposure on photographic film.
In physics and cosmology, digital physics (also referred to as digital ontology or digital philosophy) is a collection of theoretical perspectives based on the premise that the universe is describable by information.
In digital recording, audio signals picked up by a microphone or other transducer or video signals picked up by a camera or similar device are converted into a stream of discrete numbers, representing the changes over time in air pressure for audio, and chroma and luminance values for video, then recorded to a storage device.
The Digital Revolution, also known as the Third Industrial Revolution, is the shift from mechanical and analogue electronic technology to digital electronics which began anywhere from the late 1950s to the late 1970s with the adoption and proliferation of digital computers and digital record keeping that continues to the present day.
Digital video is an electronic representation of moving visual images (video) in the form of encoded digital data.
In electronics, a digital-to-analog converter (DAC, D/A, D2A, or D-to-A) is a system that converts a digital signal into an analog signal.
Deoxyribonucleic acid (DNA) is a thread-like chain of nucleotides carrying the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses.
An electrical telegraph is a telegraph that uses electrical signals, usually conveyed via dedicated telecommunication circuit or radio.
Electronics is the discipline dealing with the development and application of devices and systems involving the flow of electrons in a vacuum, in gaseous media, and in semiconductors.
In information theory and coding theory with applications in computer science and telecommunication, error detection and correction or error control are techniques that enable reliable delivery of digital data over unreliable communication channels.
A finger is a limb of the human body and a type of digit, an organ of manipulation and sensation found in the hands of humans and other primates.
Flag semaphore (from the Greek σῆμα, sema, meaning sign and φέρω, phero, meaning to bear; altogether the sign-bearer) is the telegraphy system conveying information at a distance by means of visual signals with hand-held flags, rods, disks, paddles, or occasionally bare or gloved hands.
In mathematics, computer science, and linguistics, a formal language is a set of strings of symbols together with a set of rules that are specific to it.
The genetic code is the set of rules used by living cells to translate information encoded within genetic material (DNA or mRNA sequences) into proteins.
George Robert Stibitz (April 30, 1904 – January 31, 1995) was a Bell Labs researcher internationally recognized as one of the fathers of the modern first digital computer.
Granularity (also called graininess), the condition of existing in grains or granules, refers to the extent to which a material or system is composed of distinguishable pieces or grains.
Home computers were a class of microcomputers entering the market in 1977, and becoming common during the 1980s.
The Information Age (also known as the Computer Age, Digital Age, or New Media Age) is a 21st century period in human history characterized by the rapid shift from traditional industry that the Industrial Revolution brought through industrialization, to an economy based on information technology.
Information security, sometimes shortened to InfoSec, is the practice of preventing unauthorized access, use, disclosure, disruption, modification, inspection, recording or destruction of information.
An information system (IS) is an organized system for the collection, organization, storage and communication of information.
Information theory studies the quantification, storage, and communication of information.
International maritime signal flags refers to various flags used to communicate with ships.
An Internet forum, or message board, is an online discussion site where people can hold conversations in the form of posted messages.
In system programming, an interrupt is a signal to the processor emitted by hardware or software indicating an event that needs immediate attention.
A joystick is an input device consisting of a stick that pivots on a base and reports its angle or direction to the device it is controlling.
Latin (Latin: lingua latīna) is a classical language belonging to the Italic branch of the Indo-European languages.
A letter is a grapheme (written character) in an alphabetic system of writing.
The MIT Press is a university press affiliated with the Massachusetts Institute of Technology (MIT) in Cambridge, Massachusetts (United States).
A modem (modulator–demodulator) is a network hardware device that modulates one or more carrier wave signals to encode digital information for transmission and demodulates signals to decode the transmitted information.
In electronics and telecommunications, modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal, with a modulating signal that typically contains information to be transmitted.
Morse code is a method of transmitting text information as a series of on-off tones, lights, or clicks that can be directly understood by a skilled listener or observer without special equipment.
In signal processing, noise is a general term for unwanted (and, in general, unknown) modifications that a signal may suffer during capture, storage, transmission, processing, or conversion.
A number is a mathematical object used to count, measure and also label.
In linguistics, pausa (Latin for "break", from Greek "παῦσις" pausis "stopping, ceasing") is the hiatus between prosodic units.
Polling, or polled operation, in computer science, refers to actively sampling the status of an external device by a client program as a synchronous activity.
Punctuation (formerly sometimes called pointing) is the use of spacing, conventional signs, and certain typographical devices as aids to the understanding and correct reading of handwritten and printed text, whether read silently or aloud.
Quantization, in mathematics and digital signal processing, is the process of mapping input values from a large set (often a continuous set) to output values in a (countable) smaller set.
In mathematics, representation is a very general relationship that expresses similarities between objects.
In signal processing, sampling is the reduction of a continuous-time signal to a discrete-time signal.
Science, also widely referred to as Science Magazine, is the peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals.
The smoke signal is one of the oldest forms of long-distance communication.
In computer networks, a syncword, sync character, sync sequence or preamble is used to synchronize a data transmission by indicating the end of header information and the start of data.