Before revision: The NCR 53C9x is a family of application-specific integrated circuits (ASIC) produced by the former NCR Corporation for implementing the SCSI protocol in hardware .
After revision: (small computer standard interface) busand relieving the host system of the work required to sequence the SCSI busThe NCR 53C9x is a family of application-specific integrated circuits (ASIC) produced by the former NCR Corporation for implementing the SCSI protocol in hardware .