Incisions are made in the ear canal and the remnant of the eardrum is lifted up. The ear canal may be widened. A tissue graft from the ear muscle (fascia) or cartilage is obtained and is slid under the eardrum. Packing is placed in the middle ear and ear canal to hold the graft and drum against each other to heal.
ECC stands for Enterprise Central Component. The purpose of positioning it as ECC is to enable SAP to build and develop an environment of other products that can function upon the foundation of the central component. R/3 Enterprise was replaced with the introduction of ERP Central Component.
OPC is a software interface standard that allows Windows programs to communicate with industrial hardware devices. OPC is implemented in server/client pairs. The OPC server is a software program that converts the hardware communication protocol used by a PLC into the OPC protocol. The OPC client software is any program that needs to connect to the hardware, such as an HMI . The OPC client uses the OPC server to get data from or send commands to the hardware.