A facility for detecting writing errors in some magnetic tape systems consisting of using a second head adjacent to the writing head to read data immediately after it is written and to compare it with the original data as held in a buffer.
英
美
- 一種檢測某些磁帶系統寫(xiě)入錯誤的設施，這些磁帶系統使用寫(xiě)入磁頭旁邊的第二個(gè)磁頭在數據寫(xiě)入以后立即將其讀出，并將它們與在緩沖器中的原始數據相比較。
