| 摘要 |
PCT No. PCT/JP95/00022 Sec. 371 Date Nov. 18, 1997 Sec. 102(e) Date Nov. 18, 1997 PCT Filed Jan. 11, 1995 PCT Pub. No. WO96/21895 PCT Pub. Date Jul. 18, 1996A memory package for storing data and capable of being added to or replaced while being provided with a battery backup in computer systems which can be mounted with a plurality of said memory packages. A memory package also has a function to reduce power consumption of the battery backup to a minimum, when the memory package with battery backup is inserted into the computer system without the main power being applied. Consequently, even if additional memory packages are inserted in computer systems installable with memory packages having battery backups, only a weak current need be supplied from the backup power supply so that the battery will not run down after a short time. The memory packages can therefore be added and replaced while still storing data internally and the memory capacity can be changed.
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