信息技术与信息服务

来源 :世界科技研究与发展 | 被引量 : 0次 | 上传用户:woailzm002
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
个人电脑市场向中低档转移 近一年来,世界各大计算机公司纷纷瞄准中低档个人电脑市场,个人电脑价格不断下调,这表明个人电脑市场的发展由追求高速度、高配置转向低价和实用。 个人电脑降价之风源于美国康柏公司和微处理器厂商塞利克斯公司。去年1月,它们率先推出采用廉价微处理器的“千美元以下个人电脑”。之后,很多公司纷纷效仿,目前这类个人电脑销量占美国电脑市场的一半以上。最近四个月,美国康柏、德尔、惠普等公司分别将其最新家用个人电脑降价百分之二十,电脑价格向每台800美元的低价位转移,连一贯追求高性能的美国苹果电脑公司也于3月宣布降低其高档机的价格。 与此同时,个人电脑中最昂贵器件微处理器的价格也 In the past year or so, the major computer companies in the world have targeted the middle and low-end personal computer market. The prices of personal computers have been declining. This shows that the development of the personal computer market has shifted from the pursuit of high speed and high configuration to the low price and practicality. PC prices originated in the United States and Compaq Microprocessor companies Selix Corporation. In January last year, they pioneered “less than $ 1,000 PCs” using inexpensive microprocessors. Since then, many companies have to follow suit, the current sales of such personal computers account for more than half of the US computer market. In the recent four months, companies such as Compaq, Dell and Hewlett-Packard have cut the price of their latest home PCs by 20% and the prices of computers to the low price of $ 800 each. They even pursue the high-performance Apple Computer The company also announced in March to lower the price of its high-end machines. At the same time, the price of the most expensive device microprocessor in personal computers is also
其他文献
一、引言各种规格的待洗油桶以往是用人工按化学洗桶工艺要求施加酸、碱、水、油进行冲洗的。不但劳动强度大,空气污染严重,且洗桶质量不高,迫切需要能自动进行化学洗桶的装
Aharonov-Casher oscillasions of transmission through a mesoscopic ring with a magnetic impurity is investigated.Both spin-dependent transmission and reflection
目前,微型计算机的应用已逐渐深入到仪器仪表、测量、环保、工业控制、数据处理、科学计算、图象信息处理。计算机辅助设计和人工智能等领域中去,这一新技术的应用已经产生
There are various applications of the stability theory of the first-order dynamical systems.And the stability of the non-linear control systems can be determine
定序器是一种使用“继电器符号语言”的专用微机。它将计算机的高可靠性、响应速度快、读写容易、更换方便等优点与继电器控制电路简单易懂、操作简便、控制容量大等优点结合
提高葡萄的产量和品质,是目前种植者最关心的问题。要提高产量和品质就必须规范化栽植和管理。栽植的选址、时间、方法、肥水及管理技术是实现高产增收的关键。葡萄是一种抗
While the development of particular video segmentation algorithms has attracted considerable research interest, relatively little effort has been devoted to pro
While the enterprise resource planning (ERP) systems become more and more complex, the traditional tools such as DCOM, CORBA or EJB encounter more difficulties
This paper proposes an engineering approach to examine the stability margin of cascade circuits.The proposed measurement injects an external perturbation curren
It is expected that by 2003 continuous media will account for more than 50% of the data available on origin servers, this will provoke a significant change in I