Clock register

Clock register using relays. (For 6-digit clock) ･Top left lamp = to input minute counter ･Top center light = to hour counter input ･Top right lamp = Second counter and clock power supply ･Bottom left lamp = carry output for seconds counter ･Bottom right lamp = minute counter carry output ･Top button = S button ･Bottom button = M button The M button is used to change modes. Each press of this button changes the mode from normal mode to seconds reset mode, hour setting mode, and minute setting mode. ･Normal mode: The clock is displayed as usual. ･Seconds Reset Mode: Pressing S button shuts off power to the seconds counter and clock. The seconds display setting is completed by adjusting the seconds to 0 seconds of the reference time and releasing the button. ･Hour setting mode: Press S button to count up the hour digits. At this time, pressing and holding down the button shifts to automatic count-up. ･Minute setting mode: Press S button to count up the minute digits. At this time, pressing and holding down the button shifts to automatic count-up. This time setting procedure was created with reference to Casio watches.

published 2 years ago