Keyboard layout based on the Wijesekara typewriter for Sinhala script. The Chinese National Standard on Tibetan Keyboard Layout standardises a layout for the Tibetan language in China. The first version of Microsoft Windows to support the Tibetan keyboard layout is MS Windows Vista. The layout has been available in Linux since September 2007. Mac OS-X introduced Tibetan Unicode support with OS-X version 10.5 and later, now with three different keyboard layouts available: Tibetan-Wylie, Tibetan QWERTY and Tibetan-Otani. The Bhutanese Standard for a Dzongkha keyboard layout standardizes the layout for typing Dzongkha, and other languages using the Tibetan script, in Bhutan. This standard
Keyboard layout a cause of the divergence between the bit-paired keyboards found in the 1960s and 1970s and the typewriter-paired keyboards that are now standard in the US. This change was made because smaller characters hit the paper with less force, and consolidating smaller characters such as '" into a pair on a single key avoided needing to adjust the force based on shift state. The standard 101/102-key PC keyboard layout was invented by Mark Tiddens of Key Tronic Corporation in 1982. IBM adopted the layout on its PC AT in 1984 (after previously using an 84-key keyboard which did not have