keyboard contact
31Cryptanalysis of the Enigma — enabled the western Allies in World War II to read substantial amounts of secret Morse coded radio communications of the Axis powers that had been enciphered using Enigma machines. This yielded military intelligence which, along with that from… …
32Switch — For other uses, see Switch (disambiguation). Electrical switches. Top, left to right: circuit breaker, mercury switch, wafer switch, DIP switch, surface mount switch, reed switch. Bottom, left to right: wall switch (U.S. style), miniature toggle… …
33Danger Hiptop — Manufacturer Danger Incorporated / Flextronics / Sharp Corporation / Motorola Carriers T Mobile (2002 2010) Telstr …
34Jawi alphabet — Not to be confused with Javanese script Arab World This article is part of the series: Arab Culture …
35String instrument — A string instrument (or stringed instrument) is a musical instrument that produces sound by means of vibrating strings. In the Hornbostel Sachs scheme of musical instrument classification, used in organology, they are called chordophones. The… …
36Smartphone — Modern smartphones. A smartphone is a high end mobile phone[1][2] …
37Touchscreen — A boy is solving a computerized puzzle using a touchscreen. A touchscreen is an electronic visual display that can detect the presence and location of a touch within the display area. The term generally refers to touching the display of the… …
38Key punch — A key punch is a device for entering data into punched cards by precisely punching holes at locations designated by the keys struck by the operator. Early keypunches were manual devices. Later keypunches were mechanized, often resembled a small… …
39Synthesizer — For other uses, see Synthesizer (disambiguation). Synth redirects here. For other uses, see Synth (disambiguation). See also: Software synthesizer Early Minimoog by R.A. Moog Inc. (ca. 1970) A synthesizer (often abbreviated synth ) is an… …
40animal learning — ▪ zoology Introduction the alternation of behaviour as a result of individual experience. When an organism can perceive and change its behaviour, it is said to learn. That animals can learn seems to go without saying. The cat that… …
