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Lossless
PNG compression preserves the pixel values supplied to its encoder without throwing image information away. That makes it useful when exact image data matters more than the smallest possible file.
1991
The camera widely remembered as the first webcam watched a coffee pot at Cambridge in 1991, initially over a local network. It became accessible through the World Wide Web in November 1993.
1964
The first mouse prototype in Douglas Engelbart’s research program was built in 1964 with a wooden body. Engineer Bill English constructed the device, which tracked movement using two perpendicular wheels.