| 摘要 |
Disclosed is a flasher display type fish finder wherein the output from a master digital oscillator is converted by a first frequency divider into a pulse train which in turn is converted by a serial-to-parallel converter into scanning or parallel pulses which are sequentially applied to a received- or echo-signal output device; and echo signal is applied through a received- or echo-signal distribution circuit to the output device; and SCRs to each which are impressed simultaneously both the scanning or parallel pulse and the echo signal is enabled to conduct and a light emitting element connected to the conducted SCR is turned on, displaying targets.
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