Method for forming a numeric entry field and a method for positioning a cursor in the numeric entry field

摘要

Disclosed is a method which includes displaying a cursor at a predetermined position in a numeric string and editing the numeric string by either one of; (1) inserting a numeral or a symbol at the cursor position, (2) replacing a numeral or symbol at the cursor position or (3) deleting a numeral at the cursor position or deleting a numeral preceding the cursor position. A digit separator is then inserted into the edited numeric string and the resultant numeric string is displayed on a display device. The cursor is then moved to a new position where another editing step is to be performed on a numeral or symbol that is one position to the right of the numeral or symbol that was inserted, replaced or deleted. Another method disclosed includes displaying a cursor for a numeric string alteration operation at a predetermined cursor position in a numeric string that consists of an optional prefix and a numeric portion wherein a digit separator is counted as one character. A cursor shift value is then defined and set according to the operation to be performed. After the operation, the cursor is displayed at a new cursor position which is equal to the predetermined cursor position plus the cursor shift value.