| http://www.w3.org/ns/prov#value | - The timing unit 160 is used to calculate the time for the storage, and in this embodiment, the timing unit is a timer. [0021] Further, the housing 10 comprises one or more press buttons 11, and these press buttons are electrically coupled to a power button, an input start button, various selection buttons, alphabetical button, and numeric button, etc. as shown in FIG. 2. [0022] Please refer to FIG
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