| 摘要 |
PURPOSE:To perform a dialing without turning eyes upon the operation part, by generating the voice in turn by key operation and storing successively the numbers produced in said voice with a confirmation key. CONSTITUTION:The count value output of the counter 3 is delivered in a tone of figures corresponding to the count value and through the speaker 12 by the voice compounding circuit 11 to be heared. In case the figure tone of the desired dial number is delivered through a loudspeaker, the selection button 13 is pressed once more. Thus the FF4 reverses to produce the output Q, and the gate 2 closes. And the counter 11 stops counting. Then the timg limiting circuit 5 works, and the carry pulse generating circuit 6 works to be selected to the digit of lowest rank of the shift register 7. Then the code is written to have a shift of one digit. With push of the sending button 15, the gate 9 opens. Thus the signal sent from the register 7 is sent to the parallel-serial converting circuit 17. The dial signal of the circuit 17 is delivered in the form of an electric wave through the tone encoder 18, modulator circuit 19 and trasmitter circuit 20 respectively. |
