IBM 7090,第一台晶体管计算机,使用穿孔卡片,由IBM制造。有32K内存,系统用5K,用户用27K,用户数据在内存和一台磁鼓之间切换。运行着最为著名的批处理系统 IBSYS

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Seamless Wikipedia browsing. On steroids.

Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.

Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.