| 摘要 |
PURPOSE:To eliminate chances of an erroneous rewrite and erasure by controlling enable or not of rewrite for the various information relative to a performance. CONSTITUTION:After setting a write-in protect mode (step 21) and depending on each of the ten keys (steps 31, 34, 37, 40, 43, 46, 52, 55, and 58) the sequence information write-in protect flag is switched (steps 32, 35, 38, 41, 44, 47, 50, 53, 56, and 59) and the sequence information rewrite is prohibited or allowed (steps 74, 75 and 76). |
