计算机理论第一章（国外英文资料）.docVIP

计算机理论第一章（国外英文资料） The first chapter A, radio The task of communication is to convey information, which is generally considered to consist of at least three elements. The three elements are... The source of the letter is the channel of the messenger. B A. A. (1) (2) (4) B. (1) (3) (4) C. (2) (3) (4) D. (1) (2) (3) 1. MOOREs law argues that the __________ of a single integrated circuit doubles every 18 to 24 months. D A. Chip size B. line width Working speed D. integration 1. The following statement about bits is wrong... D A. bits are the smallest unit of digital information B. bits have only 0 and 1 C. bits can either represent values or words, or they can represent images or sounds D. 1 is bigger than 0 In the following information transfer mode, ________ is not part of modern communications. D A. A. the telegraph B. the phone C. facsimile D. DVD 1. What is wrong in the statement below is ________. C A. modern information technology USES electronic technology, laser technology for information collection, transmission, processing, storage, display and control The semiconductor materials used in modern integrated circuits are mainly silicon The speed of the integrated circuit depends mainly on the number of transistors that make up the logic gate circuit The basic width of the current integrated circuit is several dozen nanometers In the description of the following logical algorithms, ________ is wrong. D A. A. B. 1 = 1 C. 1. (1) 1. In the following statements about the common communication medium, the mistake is ________. C A. Double stranded wires are used mostly for LAN communication media within buildings The maximum transmission distance of the coaxial cable is different from that of the cable model and the transmission signal, which can be several kilometers or even tens of kilometers The transmission of fiber optic signals is attenuated, so the transmission distance is very short D. wireless transmission has disadvantages that are easily wiretapped, susceptibl