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For the financial services company, see Fidelity Investments. Fidelity is also the name of a village in Illinois and a town in Missouri.Fidelity is a notion, that at its most abstract level implies a truthful connection to a source. Its original meaning dealt with loyalty and attentiveness to one's duty to a lord or a king, in a broader sense than the related concept of fealty. Both derive from the Latin word fidelitas, meaning "faithfulness."
In modern human relationships, fidelity usually means strict adherence to marriage vows, or of promises of exclusivity or monogamy, and a lack of adultery.
Fidelity also denotes how accurate a copy is to its source. For example a worn gramophone record will have a lower fidelity than one in good condition, and a recording made by a low budget record company in the early 20th century is likely to have significantly less audio fidelity than a good modern recording. In the 1950sCenturies: 19th century 20th century 21st century Decades: 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s Years: 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 Events and trends Technology United States tests the first fusion bomb., the terms " high fidelityHigh Fidelity is also the title of a book by Nick Hornby and a film directed by Stephen Frears, based upon Hornby's book. High fidelity (or HiFi or hi-fi is the reproduction of sound and image that is very faithful to the original. Hi-fi aims to achieve m" or "hi-fi" were popularized for equipment and recordings designed for more accurate sound reproductionSound reproduction is the electrical or mechanical re-creation and/or amplification of sound, often as music. See also Amplifier Audio set Audio editing CD Compact audio cassette Digital vs. Analog Digital audio Hifi Magnetic recording and tape recorder M, while " lo-fiLo-fi — from "Low Fidelity" — describes a sound recording which contains unwanted artifacts, like distortion, or noise, or a recording which has a limited frequency response. This stands in contrast to high fidelity or "hi-fi". In digital audio lo-fi usua" music aims for "authenticity" over perfect production. Similarly in electronicsElectronics is the study and use of electrical devices that operate by controlling the flow of electrons or other electrically charged particles in devices such as thermionic valves and semiconductors. The pure study of such devices is considered as a bra, fidelity refers to the correspondence of the output signal to the input signal, rather than sound.
