| 摘要 |
PURPOSE:To realize an easy and quick repetitive reading of a partial step of a program, by installing an upper limit step setting circuit, a specific counter control circuit and others. CONSTITUTION:The following component parts are provided: a memory 1 consisting of plural steps and stores a program; an address counter 2; an upper limit step setting circuit 7 that sets the upper limit step of the program to be read out of the memory 1; a pulse generating circuit 19 that generates the pulse to give a control to an address counter 2 when the step of program is changed; and others. Furthermore the 1st counter control circuit 25 that supplies the count pulse corresponding to the output pulse of the circuit 19 to the counter 2 in case when the output of the counter 2 is smaller than the output of the circuit 7. And the 2nd counter control circuit 26 supplies the reset signal and the like of the counter 2 corresponding to the output pulse of the circuit 19 to the counter 2. |
