| 摘要 |
PURPOSE:To facilitate operation of a reader/writer and setting a transceiver to the reader/writer and to improve operability by arranging terminals provided on a board substantially in parallel with the opening face of a case formed when a terminal protection cover is removed. CONSTITUTION:An element 21 is disposed on a circuit board 20 and substantially at the center between a circuit board 10 and a front case cover 2. Reference symbols 1e, 1f denote protrusions provided on the back surface of a battery case 1 to guide the hole of the board 20 at two positions. Symbol 1g denotes a protrusion formed on the lower part of the case 1 to position the part of the bottom side of the case 1 of the board 20. Symbol 1h denotes eight holes formed in the bottom of the case 1. The number of the holes is 8, but the other number may be employed. For example, the dispositions of the holes is in a zigzag, which can enhance mounting density of writing terminals and can easily reduce in size a reading/writing structure and a writer. |
