| 摘要 |
An instrument, analyzer or item of test equipment for some technical discipline is equipped with a numeric keypad that, in addition to the digits zero through nine and the decimal point, and which instead of carrying all the keys ordinarily needed, has been augmented to carry additional sequences of ordered symbols or legends. The multi-tap and T9Word techniques may be used to enter text strings that may include technical legends and abbreviations. In a system where another row or column of keys has been added, a CMD ('COMMAND') key can institute a Symbol Mode where selected keys, including the digit keys exhibit multi-tap or T9Word operation, whereas they ordinarily do not, so as to be able to support rapid numeric entry of arbitrary sequences of digits, including consecutively repeated digits. The Symbol Mode may be automatically entered and exited during the execution of commands or operations that need Symbol Mode input.
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