ultrasonic aid for the blinds

ultrasonic aid for the blinds: Медицина: ультразвуковой аппарат для ориентации слепых

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photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… … Universalium
Human-computer interaction — Human–computer interaction or HCI is the study of interaction between people (users) and computers. It is often regarded as the intersection of computer science, behavioral sciences, design and several other fields of study. Interaction between… … Wikipedia
Human–computer interaction — This article is about the interaction between users and computers. For the direct communication between brain cells and computers, see Brain–computer interface. A mouse is a pointing device that functions by detecting two dimensional motion… … Wikipedia

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