计算机组成原理BB平台测试题答案Word下载.docx

1、In 8-bits micro-computer system, multiplication and division are realized by （D ）.CA. dedicated chips B. firmware C. software D. hardware问题 7Software is equivalent to hardware in logic function. A问题 8Resources management of computer software and hardware is the duty of （D ）.A. Operating System B. La

2、nguage process program AC. Database Management System D. Application program问题 9The reason of binary representation for information in a computer is it can easily process the information. B问题 10The basic feature of Von Neumann computer is （A ）.A. access memory by address and execute instruction in s

3、equenceB. access memory by contentC. Multiple Instruction Stream Single Data Stream （MISD）D. operate stack问题 11Data and instructions are stored in （ C） when the program is running. AA. memory B. disk C. datapath D. operating system问题 12The operating system is appeared in （ C）.A. the 4th generation c

4、omputers B. the 2nd generation computersC. the 3rd generation computers D. the 1st generation computers问题 13The so called “PC” belongs to （ C）.A. Medium computers B. Mainframes C. Micro-computers D. Mini-computers问题 14Computer hardware consists of calculator, memory, controller and I/O A问题 15（C ） is

5、 not belonged to system program.A. Database system B. Operating system C. Compiler program D. the above all问题 16The vast majority of computer systems used today are constructed on （B ） computer model.A. intelligent B. Von Neumann C. parallel D. real time processing问题 17The use of （ C ） signified the

6、 development of micro-computer.A. software B. disk C. Microprocessor D. OS问题 18The use of microprocessor signified the development of 问题 19The reason why the binary system of representation is widely adopted in computer is （B ）.A. computing speed fast B. convenience for information processingC. savi

7、ng components D. the restriction of the nature of physical devices问题 20A full computer should consists of （D ）.A. host and Peripheral B. calculator, memory and controllerC. host and program D. hardware and software system问题 21Host consists of CPU and I/O devices A.问题 22In a computer based on the von

8、 Neumann model, instructions and data are all stored in memory, and CPU distinguish them according their address. B问题 23System software is purchased, and applied software is edit by ourselves B .问题 24Which of the following languages can be implemented directly and edited by Mnemonic（助记符）: Assembly l

9、anguage; machine language; High-level language; Operating system primitives; Regular language BA. , B. ， C. ， D. ，问题 25In computer terminology, CPU consists of calculator and controller. A选择题答案： 第二章If X 2s complement = ，then Xsign-magnitude = （ D ）A. B. C. D. （ B ） is used to represent address in co

10、mputer.A. 1s complement B. unsigned number C. 2s complement D. sign magnitudeNumbers X1, X2 are integer, and 【X1】2s compl = ，【X2】 2s compl = 00011011, then their true value of decimal form are _-101_ and _27_。+=问题 4The sign-magnitude representation of 0 is unique. BPlus two 2s complement numbers tha

11、t adopt 1 sign bit, overflow must occur when （ CD）.A. carry signal is generated from the sign bitB. XOR operation for carry signal generated from the sign bit and carry signal generated from the highest numerical bit is 0C. XOR operation for carry signal generated from the sign bit and carry signal

12、generated from the highest numerical bit is 1D. XOR operation for carry signal generated from the sign bit and carry signal generated from the highest numerical bit is 1The range of representation for a 1s complement number system of 64 bits （including the sign bit） is （A）.A. 0|N|263 1 B. 0|N|262 1

13、C. 0|N|264 1 D. 0|N|263Fixed point number can be classified into pure decimal（纯小数） and pure integer（纯整数）.A.对 B.错 AIn fixed point calculator, whether adopted double sign bit or single sign bit, it must has （ ）, which is often implemented by （ ）. CA. Decoding circuit, NAND gate B. encoding circuit, NO

14、R gateC. overflow detection circuit, XOR gate D. shift circuit, AND-OR gateArithmetic shift 2s complement of a positive, sign bit remains unchanged, and the blank bit fills in 0. Arithmetic left shift 2s complement of a negative, sign bit remains unchanged, and the low bit fills _0_. Arithmetic righ

15、t shift 2s complement of a negative, sign bit remains unchanged, and the high bit fills_1_, and truncat low bit.问题 10？Let the word length is 8, the fixed point integer with 2s complement representation of -1 is _.In fixed point operation, it will be overflow when the result exceeds the represent ran

16、ge of the computer. AFor a 8-bit 2s complement representation integer number, its minimal value is_-128_, its maximal value is_127_.A fixed point number is composed of sign bit and numerical part.A.对 B.错 BThe range of representation for a 2s complement number system of 16 bits （including the sign bi

17、t） is （ A）.A. -215 + （215 -1） B. - （215 1） + （215 1） C. -215 + 215 D. - （215 +1） + 215 8-4-2-1 BCD code of a number is 0111 1000 1001， then its true value is_789_.The addition/subtraction algorithm for sign magnitude representation is rather simple. BWhich of the following numbers is odd parity 奇校验?

18、 A?A. 0 B. 001000111 C. 1 D. 1The number represented in the computer sometimes will be overflow, the fundamental reason is the limited computer word length. AFor fixed point binary calculator, subtraction is implemented through （ B）.A. 2s complement binary subtractor B. 2s complement binary adderC.

19、sign magnitude decimal adder D. sign magnitude binary subtractorIn 2s complement addition/subtraction, using 2 sign bits for overflow detection, when the 2 sign bits S1S2 equals 10, it means that （C ）.A. result is positive, with no overflow B. result is negative, with no overflowC. result is overflo

20、w D. result is underflowThe 2s complement representation of -127 is . B The minimal number of the following numbers is （ B）.A. （100101）2 32+4+1=37 B. （0010 0010）BCD 22 C. （50）8 40 D. （625）16 2s complement representation of 0 equals to 1s complement representation of -1. BA.对 B.错 0If X2s complement =

21、 ，then Xsign-magnitude = （B）For sign magnitude representation, 1s complement representation, 2s complement representation,_原码_ and_反码_has 2 representations of 0.问题 26The use of 2s complement operation is adopted to simplify the design of computer. A问题 27Fixed point calculator is used for （ A ）.A. fi

22、xed point operation B. floating point operationC. fixed point operation and floating point operation D. decimal addition问题 28When -1x0, xsign-magnitude = （A）A. 1-x B. （2-2-n）-|x| C. 2+x D. x问题 29The maximal number of the following numbers is （A ）.A. （227）8 151B. （96）16 150C. （）2 149D. （143）5 48问题 30

23、8-4-2-1 code is binary number. B问题 31 ？A decimal number is , then its octal form is , its hexadecimal form .问题 32For a 8-bit 1s complement representation integer number, its minimal value is_-127_, its maximal value is_127_.问题 33The （C）representation of 0 is unique.A. sign magnitude and 1s complemen

24、tB. 1s complementC. 2s complementD. sign magnitude问题 34The range of representation for a unsigned binary number system of 16bits is_0_65535_.问题 35Given 【x1】 2s compl =， 【x2 】sign mag =, the decimal value of x1 and x2 are_-52_ and 答案： 3. -101 27 9. 0 1 10. 12. -128 127 25. sign magnitude representati

25、on 1s complement representation 31. 32. -127 127 34. 065535 35. -52 第五章Calculator has many components, but data bus is the key part. BIn an adder, the carry generate variable （G） of bit i is （ C）.A. XiYiB. XiYiCiC. XiYiCiD. XiYiThe carry look-ahead circuit chip 74182 realizes the carry logic between

26、 groups in parallel.A.对 B.错 The subtraction 减法algorithm 算法of fixed point binary is realized by （ ）.A. subtraction for si gn magnitude representationB. addition for binary code decimalC. addition for 2s complement representationD. subtraction for 2s complement representationThe main function of ALU is （D ）.A. arithmetic operationB. only addition operationC. logic operationD. logic and arithmetic算术 operationIn a ripple-carry adder, the key factor affecting the speed of the adder is （ C）.A. Gate-level delayB. spe