Button wiki:
>For other uses of the word button, see Button (disambiguation). A button is small disc- or knob-shaped object attached to cloth or an article of clothing. Buttons may be manufactured from an extremely broad variety of materials, including bone, ivory, metal, plastic, and wood. Buttons were first used by the Ancient Romans.The functional role of buttons is to fasten or cinch the openings of a garment. By sliding the button through a slit (the ) in the to which the first is to be held. The slit is only sufficiently wide to allow the button to be fully pushed through while still remaining stitched to the first piece of cloth.
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Purple wiki:
[he history of cryptography, 97-shiki-obun In-ji-ki (ä¹ä¸å¼æ¬§æå°åæ©) ("System 97 Printing Machine for European Characters") or Angooki Taipu B (æå·æ©Bå) ("Type B Cipher Machine"), codenamed PURPLE by the United States, was a diplomatic cryptographic machine used by the Japanese Foreign Office during, and just before, World War II. The machine was an electromechanical stepping-switch device.
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sign wiki:
n can denote any of the following: In astrology sign is often used to mean the Sun sign.In communication sign or signing refers to communicating via hand gestures, such as sign language.In computing, the digits where one bit among them tells the number is either negative or non-negative are called signed, otherwise unsigned. See also: SignednessIn divination a sign is an omen, an event or occurrence believed to fortell the future. In linguistics, Ferdinand de Saussure described a Sign (linguistics) as a combination of a concept and a sound-image.In mathematics, the sign of a number refers to whether it is negative or positive.In medicine, a medical sign is objective evidence of the presence of a disease or disorder, as opposed to a symptom, which is subjective.In semiotics, sign (semiotics) are the basic units of meaning.Information signs are notices that instruct, advise, inform or warn people.On (the side of or above) roads there are traffic signs to instruct drivers. In most parts of the world these include stop signs, speed limit signs, cross walk signs, and others. Within a writing system, a sign is a basic unit. Similar terms which are more specific are character, letter or grapheme.Commercial signage, including flashing signs, such as on a retail store, factory, or theatre.To write one's signature on a document, thus showing authorship and will.
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