| 摘要 |
PURPOSE:To enable the selection of a plurality of attached functions with a simple circuitry with selective setting of the time counting and alarm time for stop watches, timers or the like by common time counting means by controlling mutual transfer of the contents for counting time and the contents of a memory means. CONSTITUTION:At the initial state, switches 53, 54 and 55 are opened and the switch 52 selects either contact a or b. With the resetting of flip flop circuits 19 and 20, a switch 56 opens to hold the output of a gate circuit 33 at ''0'', where a divider 2 works to trigger the counting of time with a counter 4. Outputs of the counter 4 are supplied to a selection circuit 9. The output of a gate circuit 38 is held at ''0'', where the output of the counter 4 is fed to a main display means 13 through the selection circuit 9 and a decoder 11. The contact b of the switch 52 is selected for setting of the alarm time, the contact a thereof for correction of the time, the contact d thereof for operation as stop watch and the contact c thereof for operation as timer. |
