- Steve Jobs, the Xerox Alto, and computer typography (righto.com)
While this is an uplifting story about trusting in destiny, the real source of this computerized “wonderful typography” is the Xerox Alto computer, built by Xerox PARC in 1973. The Alto was a revolutionary system, one of the first to use a high-resolution bitmapped display, a GUI, and an optical mouse. The first WYSIWYG (What You See Is What You Get) text editor was created at Xerox PARC in 1974 by Charles Simonyi, Butler Lampson and other Xerox researchers. The Alto system supported many high-quality fonts, including proportionally spaced fonts with ligatures.1 Xerox PARC also invented the laser printer in 1971, allowing high-resolution documents to be printed.
- Hypotenuse (Wikipedia)
In geometry, a hypotenuse is the side of a right triangle opposite the right angle. It is the longest side of any such triangle; the two other shorter sides of such a triangle are called catheti or legs. The length of the hypotenuse can be found using the Pythagorean theorem, which states that the square of the length of the hypotenuse equals the sum of the squares of the lengths of the two legs. Mathematically, this can be written as đ2 + đ2 = đ^2, where a is the length of one leg, b is the length of another leg, and c is the length of the hypotenuse.