Portable electronic equipment

TLDR: In this article, the authors propose to eliminate an excessive write operation, and to prolong a physical service life as a memory, by detecting the data length of the storage data at the time of inputting a storage data string, and deciding whether or not all data constituting the data string can be stored in an area to be stored.

Abstract: PURPOSE:To eliminate an excessive write operation, and to prolong a physical service life as a memory, by detecting the data length of the storage data at the time of inputting a storage data string, and deciding whether or not all of data constituting the storage data string can be stored in an area to be stored CONSTITUTION:At the time of writing the storage data in the area, when a control element 15 decides that all of inputted storage data are impossible to be stored in the area, according to data string byte number information in an instruction data, the control element 5 outputs a response data which means a byte number information error, then a state is returned to an instruction data waiting state When it is decided that the are possible to be stored, the control element 15 checks the data string byte number information, and the number of bytes constituting the data string included the instruction data in such case, and when the value of the former is larger than that of the latter, the control element 15 outputs the response data which means the byte number information error, then the state is returned to the instruction data waiting state In a case of other than the above case, the value of the latter is subtracted from that of the former and a result is held as a residual quantity