symmetrical I /O unit

In multiprocessing, a unit that is attached to two processors; it appears as the same I /O unit to each processor, and can be accessed in the same manner by each processor.; 在多道處理技術中,與兩個處理機相連的一種設備［裝置］;對每個處理機似乎有同一個 輸入輸出裝置,并可由各個處理機以同樣方式存取。