ELECTRONIC CALCULATORS; ELECTRONIC PERSONAL HAND-HELD ORGANIZERS FOR USE IN STORAGE AND RETRIEVAL OF NAMES, ADDRESSES, TELEPHONE NUMBERS, WITH FEATURES OF CALCULATOR, CALENDAR, TIME AND ALARM CLOCK FUNCTIONS; ELECTRONIC LANGUAGE TRANSLATORS; HAND-HELD ELECTRONIC DICTIONARIES; HAND-HELD ELECTRONIC SPELL CHECKERS DETECTING SPELLING ERRORS; ELECTRONIC CURRENCY CONVERTERS WITH THE FEATURE OF CALCULATOR