A management apparatus connected to an image forming apparatus for managing usage of the image forming apparatus is disclosed. Each memory unit is serially connected with a select transistor and a memory cell. A digital multimedia broadcast terminal includes a receiver for receiving a broadcast data frame that includes an occurrence change field, and a controller configured to generate a control signal causing a service update responsive to reconfiguration version data defined within the occurrence change field. The compact instruction set covers a subset of the architecture, whereas the complete instruction set covers the entire architecture. The sense amplifier control circuit allows entry of read data into the sense amplifier while the sense amplifier is being disabled. When a video source is shut off, a portion of the remaining stored fields may be flushed.