英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字,中文词皆可:

timesharing    
n. 分时

time-sharing
分时


timesharing
分时

timesharing[now primarily historical] Timesharing is the technique of scheduling
a computer's time so that they are shared across multiple tasks and
multiple users, with each user having the illusion that his or her
computation is going on continuously. John McCarthy, the inventor of
LISP, first imagined
this technique in the late 1950s. The first timesharing operating
systems, BBN's "Little Hospital" and CTSS, were
deplayed in 1962-63. The early hacker culture of the 1960s and 1970s grew
up around the first generation of relatively cheap timesharing computers,
notably the DEC 10, 11, and VAX lines. But these
were only cheap in a relative sense; though quite a bit less powerful than
today's personal computers, they had to be shared by dozens or even
hundreds of people each. The early hacker comunities nucleated around
places where it was relatively easy to get access to a timesharing
account.Nowadays, communications bandwidth is usually the most important
constraint on what you can do with your computer. Not so back then;
timesharing machines were often loaded to capacity, and it was not uncommon
for everyone's work to grind to a halt while the machine scheduler
thrashed, trying to figure out what to do next. Early hacker slang
was replete with terms like cycle
crunch and cycle drought
for describing the consequences of too few instructions-per-second spread
among too many users. As GLS has noted, this sort of problem influenced
the tendency of many hackers to work odd schedules.One reason this is worth noting here is to make the point that the
earliest hacker communities were physical, not distributed via networks;
they consisted of hackers who shared a machine and therefore had to deal
with many of the same problems with respect to it. A system crash could
idle dozens of eager programmers, all sitting in the same terminal room and
with little to do but talk with each other until normal operation
resumed.Timesharing moved from being the luxury of a few large universities
runing semi-experimental operating systems to being more generally
available about 1975-76. Hackers in search of more cycles and more control
over their programming environment began to migrate off timesharing
machines and onto what are now called workstations around 1983. It took another ten
years, the development of powerful 32-bit personal micros, the
Great Internet Explosion before the migration was
complete. It is no coincidence that the last stages of this migration
coincided with the development of the first open-source operating
systems.


请选择你想看的字典辞典:
单词字典翻译
Timesharing查看 Timesharing 在百度字典中的解释百度英翻中〔查看〕
Timesharing查看 Timesharing 在Google字典中的解释Google英翻中〔查看〕
Timesharing查看 Timesharing 在Yahoo字典中的解释Yahoo英翻中〔查看〕





安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Free Credit Reports | Consumer Advice
    Free Credit Reports Your credit report is an important part of your financial life It can determine whether you can get credit, how good or bad the terms for getting credit are, and how much it costs you to borrow money Learn how to get your free credit reports — and why it’s a good idea
  • Disputing Errors on Your Credit Reports | Consumer Advice
    Is Your Credit Report Accurate? The information in your credit report can affect your buying power and your chance to get a job, rent or buy a place to live, and buy insurance Credit bureaus sell the information in your report to businesses that use it to decide whether to loan you money, give you credit, offer you insurance, or rent you a home Some employers use credit reports in hiring
  • You now have permanent access to free weekly credit reports
    The three national credit reporting agencies — Equifax, Experian, and TransUnion — have permanently extended a program that lets you check your credit report at each of the agencies once a week for free Visit AnnualCreditReport com to request free copies of your credit reports
  • Credit Freezes and Fraud Alerts | Consumer Advice
    Credit freezes and fraud alerts can help protect you from identity theft They can also help stop someone who stole your identity from continuing to misuse it Credit freezes and fraud alerts work in different ways Learn the differences, how to place a freeze or alert, and how long they last Your personal situation will determine which one is right for you
  • Consumer Advice | Federal Trade Commission
    Free Credit Reports Learn how, why, and when to order copies of your free annual credit report
  • Scams | Consumer Advice
    If a company calls you unexpectedly and offers to help lower your credit card interest rate, say “no, thanks ” It’s probably a scammer hoping you’ll pay them for shortcuts that don’t really exist Here’s how to spot and avoid scams that promise to help lower your credit card interest rate
  • Credit Repair: How to Help Yourself - Federal Trade Commission
    It doesn’t cost anything to dispute mistakes or outdated items on your credit report Both the credit reporting company and the information provider (the person, company, or organization that provides information about you to a credit reporting company) are responsible for correcting inaccurate or incomplete information in your report
  • How To Get Out of Debt | Consumer Advice
    If you’re worried about how to get out of debt, here are some things to know — and how to find legitimate help
  • How to recognize a fake Geek Squad renewal scam
    Scammers are at it again, impersonating well-known businesses and trying to rip people off This time they’re pretending to be from Geek Squad, Best Buy’s tech support service Here’s what we’re hearing about the scam and what to do if you see it
  • Your Source for a Truly Free Credit Report? AnnualCreditReport. com
    Order online from annualcreditreport com, the only authorized website for free credit reports, or call 1-877-322-8228 You will need to provide your name, address, social security number, and date of birth to verify your identity





中文字典-英文字典  2005-2009