It makes up the part of the throat situated immediately posterior to the nasal cavity, posterior to the mouth and superior to the esophagus and larynx. The human pharynx is conventionally divided into three sections: the nasopharynx, the oropharynx and the laryngopharynx. It is also important in vocalization. There are two sets of pharyngeal muscles that act upon the pharynx. These are arranged as an inner layer of longitudinal muscles and an outer circular layer.
The arrangement is to seperate letters which frequently occur consecutively in words, to eliminate jamming of manual typewriters. sue bailey, London UK. The 'qwerty' keyboard was designed for use on typewriters so that frequently used letters were spread apart, avoiding clashing or jamming of the most used 'hammers'.
Touch Keyboard in Windows 8. To turn on the Touch Keyboard, swipe in from the right edge to open the Charms bar. Tap Settings and then Keyboard. Next select Touch keyboard and handwriting panel. The keyboard will appear. Add the standard keyboard layout as a touch keyboard option. Here you can also enable or disable the following settings: 1  Playing of key sounds. 2  Captitalize the first letter of each sentence automatically. 3  Use all upercase when I double-tab.