求翻译：1981年，IBM设想在一个新的层面——个人层面——上发展计算能力，以便将信息技术的潜能和生产力从大型机扩展到人们的家庭和工作中去。1981年8月12日， IBM正式发布了历史上第一台PC，从此人类就进入了个人电脑时代。是什么意思？

In 1981, IBM envisioned a new level - the individual level - on the development of computing power, so that the potential of information technology and productivity of people from the mainframe to the family and extended work. August 12, 1981, IBM released a history of first PC, since humans have en

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In 1981, IBM conceived in a new stratification plane - - individual stratification plane - - on develops the computation ability, in order to expanded the information technology potential and the productive forces from the large-scale machinery to in people's family and the work.On August 12, 1981,

In 1981, IBM envisages a new dimension-the development of computing power on a personal level – in order to extend the potential of information technology and productivity from the mainframe to people's homes and in our work. On August 12, 1981 IBM released the first PC ever since humankind has ente

In 1981, IBM envisioned a new level - the individual level - on the development of computing power, so that the potential of information technology and productivity of people from the mainframe to the family and extended work. August 12, 1981, IBM released a history of first PC, since humans have en