FISH FINDER

摘要

Fish finder in which an information obtained by a single operation is displayed as one indication line on a raster scanning cathode-ray tube display device (23) to indicate the indication lines in the same format as the record on a recording paper where such information is arranged in the older sequence. The information is stored in a main memory (22), and read out repeatedly to be supplied to the cathode ray tube display device (23). In order to save the storage capacity, the main memory (22) consists of first and second main memories to thereby supply the mean and individual information of the outputs from both the memories alternatively into the cathode ray tube display device (23) so as to complementarily indicate the mean information of the displayed information between the adjacent indication lines.