问题 单项选择题

某总线有104根信号线,其中数据总线(DB)32根,若总线工作频率为33MHz,则其理论最大传输率为()。(注:本题答案中的B表示Byte)

A.33MB/s

B.64MB/s

C.132MB/s

D.164MB/s

答案

参考答案:C

解析:

[分析]:

本题考查计算机系统硬件方面的基础知识。微机内部总线数据传输采用并行方式,由于数据总线为32根,在每个总线工作频率,一根数据线仅传输1bit数据,又因为总线工作频率为33MHz,因此理论上每秒传送的bit数为32×33M=1056bit,因此最大传输率为:。数据的最大传输率仅和数据线的数量有关系,与信号线总数没有关系,因此总线有104根信号线,对答案没有影响。

单项选择题
单项选择题

Are you interested in seeing the beautiful fall foliage of New England but tired of traffic jams and overbooked hotels Then this year forget the crowds in New England and see the beautiful colors of autumn in the Catskills.
These rugged mountains in New York State, just 90 miles northwest of New York City, are famous for the legendary tales of Rip Van Winkle, and more recently for the summer hotels mat sprang up in the region during the 1940s, 1950s, and 1960s. Families trying to escape the heat of New York City found the Catskills to be the perfect place to stay for a month or so each summer. By the late 1950s there were over 500 resorts and hotels offering nighttime entertainment as well as all kinds of outdoor activities. Famous comedies like Jackie Gleason, Joan Rivers, and Sid Caesar all got their start touring the hotel clubs here. Since the introduction of air-conditioning and cheaper air travel, however, families have stopped coming to the Catskills in such large numbers, chasing instead more distant locations at different times of the year. Many of the Catskills hotels closed in the 1970s, but some remain and have expanded and changed their facilities to meet the needs of today’s visitors.
Currently, there are many activities available to the traveler besides witnessing the changing colors of the leaves. There is an all-organic sheep farm where visitors can see how a traditional sheep farm operates. There are also hundreds of miles of scenic drives in the area. Route 42, for instance, is an excellent site for spotting bald eagles. For more information on vacations in the Catskills, call the office of Public Information.

The phrase "sprang up" underlined in Paragraph 2 refers to something that has ______.

A.burst forth

B.spread out

C.operated vigorously

D.joined together