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Memories are made of ...

机译:记忆是由...

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摘要

For all the amazing advances that have been made in semiconductor technology, most notably in miniaturization and processor speed, some goals remain elusive. Among those goals is realizing the 'ideal' nonvolatile memory—memory that retains information when power is removed from the device, thereby precluding the need for battery back-up. On page 682 of this issue, Park et al. describe how bismuth titanate incorporating lanthanum might be a good material for this purpose. The problem being tackled here is that the common dynamic random access memory (DRAM), found in most computers, requires information stored in every bit to be rewritten several times per second. Some forms of nonvolatile memories are in current service (for example, for storing executable code in a processor), and they include so-called 'EEPROM' and 'flash' types which are based upon standard silicon processing. However, both suffer from disadvantages such as long write times, a limited number of write cycles and large size.
机译:对于半导体技术取得的所有惊人进步,尤其是在微型化和处理器速度方面,仍有一些目标难以实现。这些目标中的一个是实现“理想的”非易失性存储器,即在设备断电时保留信息的存储器,从而排除了对备用电池的需求。在第682页上,Park等人。描述了掺入镧的钛酸铋可能是用于此目的的良好材料。此处要解决的问题是,大多数计算机中都使用的通用动态随机存取存储器(DRAM)要求每秒存储在每个位中的信息要每秒重写几次。当前使用某些形式的非易失性存储器(例如,用于将可执行代码存储在处理器中),并且它们包括基于标准硅处理的所谓的“ EEPROM”和“闪存”类型。然而,两者都具有诸如长写入时间,有限数量的写入周期和大尺寸的缺点。

著录项

  • 来源
    《Nature》 |1999年第6754期|p.658-659|共2页
  • 作者

    Angus Kingon;

  • 作者单位
  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然科学总论;
  • 关键词

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