Specifies various characteristics of keyboards. Identifies the sections of the keybord and specifies the general shape and relative placement of the sections. Covers spacing of keys and physical characteristics. Specifies a key numbering system which applies to all types of numeric, alphanumeric and composite keybords of ITE. Specifies the principles governing the placement of characters and symbols on keys used on all types of these keyboards. Defines characteristics related to interface 1 in figure 1.