I/O interrupt indicator

A device used to determine the I/O unit originating an interrupt and the cause of the interrupt by testing the indicators associated with each I/O channel.; 一種裝置,用于判定發出中斷信號的輸入輸出設備及產生該中斷的原因,具體做法是 測試與每個輸入輸出通道相關的輸入輸出中斷指示器。