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* gotc.bat    : batch file for use TC 2.0
* gomsc.bat   : batch file for use MSC 5.0/6.0 
* demo5.prj   : project file for TC++3.0 or BC++ 3.1
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1. read/write NVSRAM
2. 0 to 30 totally 31 bytes
3. can read/write NVSRAM in any number of cycles
4. Li-battery for data backup, 10 yeasr in the normal condition
