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:


  • Mount Everest - Wikipedia
    Mount Everest (known locally as Sagarmāthā[a] in Nepal and Qomolangma[b] in Tibet Autonomous Region of China) is the highest mountain on Earth above sea level It lies in the Mahalangur Himal sub-range of the Himalayas and marks part of the China–Nepal border at its summit [4]
  • Mount Everest | Height, Map, Deaths, Facts, Climbers | Britannica
    Mount Everest, mountain on the crest of the Great Himalayas of southern Asia that lies on the border between Nepal and the Tibet Autonomous Region of China Reaching an elevation of 29,032 feet (8,849 meters), Mount Everest is the highest mountain in the world It has long been revered by local peoples
  • Mount Everest - Education
    Mount Everest is the highest point on Earth Learn about its history, the people who live there, and the people who visit to climb
  • Mount Everest 3D
    Explore Mount Everest with our high-resolution 3D map and discover all routes for trekking and mountaineering
  • Mount Everest - WorldAtlas
    Mount Everest, the world's highest peak, is located in the Mahalangur Himal subrange of the Himalayas It lies on the boundary between the Tibet Autonomous Region of China and Nepal Rising to an elevation of 8,848 86m, Mount Everest is the most prominent peak among the Seven Summits of the World
  • Mount Everest Guide 2026: Height, Location, Climbing Trekking Info
    Mount Everest complete guide: 8,848 86m height, Nepal location, climbing routes, costs, death zone info EBC trek details Expert advice from Nepal guides
  • Home - Everest Today
    Developed with ♥ by Octoways Discover the peak of inspiration
  • Mount Everest- Location, Height, Climbing, Geography, Sherpa people
    Mount Everest is a shape of a three-sided pyramid (or tetrahedral) mountain with extremely steep terrain The three sides, called slopes, face north, east, and southwest and the ridges run roughly west, northeast, and south
  • Mount Everest: Height, Location, Weather, Routes Facts
    Mount Everest is Earth’s highest peak and the ultimate trekking and climbing goal Learn its history, geography, routes, and how to explore it today
  • Everest Records Statistics – Summits, Deaths Climbers
    Mount Everest remains the world’s most iconic peak — the ultimate test of endurance, courage, and record-breaking ambition With more than 70 years of climbing history, it has become a living archive of Mount Everest records, Everest climbing statistics, and stories of human achievement





中文字典-英文字典  2005-2009