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Acum 1 oră · The PLATO system was launched in 1960 at the University of Illinois and subsequently commercially marketed by Control Data Corporation.It offered early forms of social media features with innovations such as Notes, PLATO's message-forum application; TERM-talk, its instant-messaging feature; Talkomatic, perhaps the first online chat room; News Report, a crowdsourced online newspaper, and blog ...
Acum 1 zi · A liquid-crystal display (LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals combined with polarizers.Liquid crystals do not emit light directly [1] but instead use a backlight or reflector to produce images in color or monochrome. [2]LCDs are available to display arbitrary images (as in a general-purpose ...
Acum 1 zi · Convergence in total variation is stronger than weak convergence. An important example of a log-concave density is a function constant inside a given convex body and vanishing outside; it corresponds to the uniform distribution on the convex body, which explains the term "central limit theorem for convex bodies".
