| http://www.w3.org/ns/prov#value | - FIG. 5 is a timing chart for explaining the operation of FIGS. 6A and 6B comprise flow chart for explaining the operation of the clock time setting section shown in FIG. 1, and FIG. 7 is a diagram for showing the changes of the state of the switch operation and the display of the display unit based on the operation flow chart shown in FIG. 6.
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