JPS5451868A - Electronic hour striknng circuit - Google Patents

Abstract

PURPOSE:To facilitate the identification of final striking sound by generating the striking end and striking sound completion signals with the subtraction counter at which the number of just time is set. CONSTITUTION:When the bits showing 0, 1 of a counter 7 are set according to the number of just time, the complement with the set value of the counter 7 is preset in each bit of the subtraction counter 1 constituted by FF1 thru FF4 through the gate circuit 8 provided with an inverter. At each inversion of the output of terminal 13 by the pulse synchronous to the just time signal form the clock circuit, the circuit 1 makes subtraction and when the count contents become 1, the outputs of the FF2 thru FF4 of the counter 1 become high level and the AND output of the AND circuit 11 connected to the FF1 through inverter 10 is generated to become a striking end signal. When the count contents of the counter 1 become 0, the AND output from the AND circuit 9 become striking sound completion and stop signal, which in turn resets the counter 7 and sets the same at the next just time number. Hence, if striking sound is controlled by making use of the striking end signal, the identification of the final striking sound may be readily performed with the simple constitution.