| 摘要 |
PURPOSE:To convert the setting information to the digital value of a 1/8 stage unit with a simple constitution by corresponding the pulse formed by a setting operation to a 1/3 stage and executing the (1/2)+(1/8) and (1/4)+(1/8) processing for the number of the pulse only. CONSTITUTION:A counter 3 counts the pulse generated by turning on and off switches 4 and 5 to interlock to a dial for setting the information value, and the information to show the 1/3 stage of a film sensitivity with one count is inputted to the register D of a microcomputer 1. From the data N of the register D, 3 is subtracted, to the contents of a film sensitivity data memory, 8 is added, until the contents of the register D come to be D>2, the action is repeated and the integer stage of a dial-set film sensitivity value is set to the memory. When the decimal stage of the data of the memory is a 2/3 stage, to the memory contents, +3 is added, when the decimal stage is a 1/3 stage, +2 is added, and until the contents of the register D come to be 0, the action is repeated and the decimal stage is set. |
