Cellobiuronic acid may be prepared by hydrolysis of gellan. The transcoding pipeline provides a hierarchy of operations, such that they can be organized and optimized with the aim of being able to execute the entire hierarchy in a single pass. The messages containing data indicative of validator events such as an assessment of a token resulting in acceptance of the token and an assessment of a token resulting in rejection of the token. The voltage at the output node is controlled in response to the one or more digital signals. The USB Host Controller then processes the Transfer Descriptor, thereby inviting the Ethernet adapter device to transmit its data and responsively storing the data in the predetermined buffer.