| 摘要 |
PROBLEM TO BE SOLVED: To provide a calculation apparatus for totaling time cards which speedily and easily totals a working time in one day of a short-time worker whose starting/finishing time is different respectively. SOLUTION: A simple calculation apparatus 1 is formed by superposing a disk-like fixed plate 10, a disk-like movable plate 20 and a disk-like instruction plate 30. On the fixed plate 10, starting times 11 and working times 12 are written arrayed circularly. On the movable plate 20, finishing times 21 are written and a display window 22 for displaying one of the working times is formed. At the instruction plate 30, a first frame 31 for instructing a starting time 11 and a second frame 32 for instructing a finishing time 21 are formed. When matching a finishing time 21 written on the movable plate 20 to a prescribed starting time 11 written on the fixed plate 10 corresponding to an attending time and a leaving time, the working time of one day appears in the display window 22. COPYRIGHT: (C)2008,JPO&INPIT
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