The second challenge is that the personal computer (PC) market has matured.

第二个挑战是个人电脑市场已经成熟。

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WHEN the personal computer (PC) turned 25 last year, many anniversary articles read like obituaries.

去年，也是个人电脑(PC)诞生25周年之际，许多周年纪念文章读起来却像讣告。

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At the emergence of the computer age, the company got a head start by developing the operating system (OS) for IBM's personal computer (PC) in 1981.

随着电脑时代的来临，1981年，这家刚起步的小公司开始为IBM的个人电脑开发操作系统。

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"You think you've got your own computer all to yourself and you can't tell the difference that you're working on something other than a computer and sharing this other resource and doing it at a much lower cost than having your own PC."

VOA: special.2010.04.12

Well, again, it used to be believed that the brain is wired up like a computer, like a PC or a Mac or something like that, but we know this can't be true.

人们曾经以为大脑是像计算机那样,组装起来的,像台个人电脑或苹果电脑,但我们知道这种观点是不对的

耶鲁公开课 - 心理学导论课程节选

One other piece that goes into this computer John I never remember where to put the PC, John, control? ALU? Separate? I'll put it separate you have a thing called a program counter.

另外可以进入这台计算机的是,我老是记不住在哪儿放电脑，控制？ALU？分开？我会把它分开放,你们有一个叫做程序计数器的东西。

麻省理工公开课 - 计算机科学及编程导论课程节选

If, to oversimplify, the PC was the productivity computer and the Mac was the creativity computer, PC 3.0 could be the social computer.

ENGADGET: Switched On: Pondering PC 3.0

In India, the personal computer (PC) base is limited to about 4 million.

CNN: ASIANOW - TIME Asia | Conversations: 'I Want to Make a Difference'

Therefore Social Business is the fifth shift caused by technology after the ages of the mainframe, departmental computer, PC, and the Internet.

FORBES: The Fifth Shift in Business Technology