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23 relations: Arithmetic, Arrow keys, Asterisk, Bell Labs, Calculator, Combination lock, Computer keyboard, Decimal separator, E.161, Electronic lock, Equals sign, John Karlin, Keyboard technology, Laptop, Mobile phone, Number sign, Numeric keypad, Push-button telephone, Silicone rubber keypad, Telephone, Telephone keypad, Telephone numbering plan, The New York Times.
Arithmetic
Arithmetic (from the Greek ἀριθμός arithmos, "number") is a branch of mathematics that consists of the study of numbers, especially the properties of the traditional operations on them—addition, subtraction, multiplication and division.
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Arrow keys
Arrow keys or cursor movement keys are buttons on a computer keyboard that are either programmed or designated to move the cursor in a specified direction.
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Asterisk
An asterisk (*); from Late Latin asteriscus, from Ancient Greek ἀστερίσκος, asteriskos, "little star") is a typographical symbol or glyph. It is so called because it resembles a conventional image of a star. Computer scientists and mathematicians often vocalize it as star (as, for example, in the A* search algorithm or C*-algebra). In English, an asterisk is usually five-pointed in sans-serif typefaces, six-pointed in serif typefaces, and six- or eight-pointed when handwritten. It is often used to censor offensive words, and on the Internet, to indicate a correction to a previous message. The asterisk is derived from the need of the printers of family trees in feudal times for a symbol to indicate date of birth. The original shape was seven-armed, each arm like a teardrop shooting from the center. In computer science, the asterisk is commonly used as a wildcard character, or to denote pointers, repetition, or multiplication.
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Bell Labs
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.
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Calculator
An electronic calculator is typically a portable electronic device used to perform calculations, ranging from basic arithmetic to complex mathematics.
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Combination lock
A combination lock is a type of locking device in which a sequence of symbols, usually numbers, is used to open the lock.
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Computer keyboard
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.
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Decimal separator
A decimal separator is a symbol used to separate the integer part from the fractional part of a number written in decimal form.
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E.161
E.161 is an ITU-T recommendation that defines the assignment of the basic 26 Latin letters (A to Z) to the 12-key telephone keypad.
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Electronic lock
An electronic lock (or electric lock) is a locking device which operates by means of electric current.
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Equals sign
The equals sign or equality sign is a mathematical symbol used to indicate equality.
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John Karlin
John Elias Karlin (February 28, 1918 – January 28, 2013) was an industrial psychologist and a pioneer in human factors engineering at Bell Laboratories of AT&T.
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Keyboard technology
Computer keyboards can be classified by the switch technology that they use.
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Laptop
A laptop, also called a notebook computer or just notebook, is a small, portable personal computer with a "clamshell" form factor, having, typically, a thin LCD or LED computer screen mounted on the inside of the upper lid of the "clamshell" and an alphanumeric keyboard on the inside of the lower lid.
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Mobile phone
A mobile phone, known as a cell phone in North America, is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area.
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Number sign
The symbol # is most commonly known as the number sign, hash, or pound sign.
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Numeric keypad
A numeric keypad, number pad, numpad, or ten key, is the palm-sized, 17-key section of a standard computer keyboard, usually on the far right.
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Push-button telephone
The push-button telephone is a telephone that has buttons or keys for dialing a telephone number, in contrast to having a rotary dial as in earlier telephone instruments.
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Silicone rubber keypad
Silicone rubber keypads (also known as Elastomeric Keypads) are used extensively in both consumer and industrial electronic products as a low cost and reliable switching solution.
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Telephone
A telephone, or phone, is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly.
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Telephone keypad
A telephone keypad is the keypad installed on a push-button telephone or similar telecommunication device for dialing a telephone number.
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Telephone numbering plan
A telephone numbering plan is a type of numbering scheme used in telecommunication to assign telephone numbers to subscriber telephones or other telephony endpoints.
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The New York Times
The New York Times (sometimes abbreviated as The NYT or The Times) is an American newspaper based in New York City with worldwide influence and readership.
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References
[1] https://en.wikipedia.org/wiki/Keypad
