大学计算机导论练习题及答案

Lec. 1 -5考题练习 解答

Lec. 1 Introduction The idea of a universal computational device was first described by a mathematician in 1937. The mathematician proposed that all computation could be performed by a special kind of a machine, now called _Turing___ machine. A universal _ Turing Machine ____, that can do any computation if the appropriate program is provided, was the first description of a modern computer.

考题练习 Which one of the following operations is not belong to input/output subsystem in a computer? [1] Accept data [2] Accept programs [3] Manage the other subsystem [4] Send the results to output devices Which one is not included in the sequential execution of instructions by the control unit of the von Neumann? [1] Fetch [2] Decode [3] Compile [4] Execute In the von Neumann model, _memory__ subsystem stores data and programs.3

考题练习 Which one of the following operations is not belong to input/output subsystem in a computer? [1] Accept data [2] Accept programs [3] Manage the other subsystem [4] Send the results to output devices Which one is not included in the sequential execution of instructions by the control unit of the von Neumann? [1] Fetch [2] Decode [3] Compile [4] Execute The logical steps necessary to solve a problem with a computer is called an algorithm . The most important software in a computer that controls the computing environment and provides an interface to the user is called operating system .4

考题练习FORTRAN and COBOL are examples of . [1] Software [2] Hardware [3] Architecture [4] Computer Languages The most important software in a computer, called operating system , is originally worked as a manager to facilitate access to the computer’s components by a program. A step-by-step solution to a problem is called an algorithm _. ______is the design and writing of a program in structured form. [1] Software Engineering [2] Hardware Engineering [3] Algorithm Development [4] Instructional Architecture The most important software in a computer that controls the computing environment and provides an interface to the user is called operating system _5

考题练习 At the beginning of the computer age there was only one computer language, called Machine language .

One of the first computers based on the von Neumann model was called? [1] Pascal [2] EDVAC [3] ENIAC [4] Pascaline6

考题练习 If a computer can execute 2× 109 instructions per second, what is the computer’s performance in MFLOPS? [1] 20 [2] 2000 [3] 2000000 [4] 200000000 The time unit, 400 x 10-10 seconds, is equivalent to . [1] 40 nanoseconds [2] 4000 miniseconds [3] 400 microseconds [4] 4 bitseconds The disk size is 100 x 240 bytes that is equivalent to 100 . [1] KiloBytes (KB) [2] MegaBytes (MB) [3] GigaBytes (GB) [4] TeraBytes (TB) A _________ is the method or technique that improves the efficiency of a search process, possibly by sa

crificing optimality. [1] Turing test [2] Ad-hoc [3] Trade off [4] Heuristics7

Instructions native to the central processor of a computer that are executable without assembly or compilation are called H . The component of a CPU that interprets the instructions and controls the flow of data is called _C_. A universal N_, that can do any computation if the appropriate program is provided, was the first description of a modern computer. The invention of _P_ reduced the cost and size of computers in the fourth generation.select from the following list of possible answers: (A) Ad-hoc (B) CISC (C) Control unit (D) EDVAC (E) ENIAC (F) Gigabytes (G) Heuristics (H) Machine language (I) MIPS (J) Nanoseconds (K) RISC (L) High level language (M) Trade off (N) Turing machine (O) Turing test (P) VLSI8

Lec. 2 Number Systems

考题练习 Which of the following representation is erroneous? [1] (1001001)2 [2] (765)8 [3] (ING)16 [4] 1001001 The decimal fraction, 0.15625, is equal to: [1] 2 -1 + 2 -2 [2] 2 -2 + 2 -4 [3] 2 3 + 2 5 [4] 2 -3 + 2 -5 The decimal fraction, 0.515625, is equal to: [1] 2 -1 + 2 -2 [2] 2 -2 + 2 -4 [3] 2 -1 + 2 -6 [4] 2 -1 + 2 -5 Which of the following representation is erroneous? [1] (1001001) 2 [2] (789) 8 [3] (FCF) 16 [4] 1001001 The base of the hexadecimal number systems is ____? [1] 2 [2] 8 [3] 10 [4] 16 The octal system is a positional number system that uses __8_symbols to represent a number.

考题练习 Which of the number in decimal is equal to the number ABB in hexadecimal? [1] 2747 [2] 2746 [3] 2745 [4] 2448 Which of the number in decimal is equal to the number (2731)8 in octal? [1] 1497 [2] 1498 [3] 1496 [4] 1394 The number _2746 in decimal is equal to the number ABA in hexadecimal. Which of the number in decimal is equal to the number BBB in hexadecimal? [1] 2747 [2] 2746 [3] 3003 [4] 2448 Which of the number in decimal is equal to the number (3311)8? [1] 1737 [2] 1498 [3] 1496 [4] 1394

考题练习 Convert the number (1A.2)16 in hexadecimal into the number in decimal: _26.125_. Convert the number 11A in hexadecimal into the number in decimal: _282___.

考题练习 Which of the number in octal is equal to the number 3075 in decimal? [1] 6001 [2]6003 [3] 5001 [4] 5003 We repeatedly ___ by b to convert a decimal fraction to base b. [1] Divide [2] Multiply [3] Neither a nor b [4] Both a and b Which of the number in binary is equal to the number 30.625 in decimal? [1] 11110.101 [2] 11110.011 [3] 11110.111 [4] 11111.111 Which of the number in binary is equal to the number 30.375 in decimal? [1] 11110.101 [2] 11110.011 [3] 11110.111 [4] 11111.111

考题练习

A relationship between the two bases: _4_ bits in binary is one digit in hexadecimal. Which of the number in octal is equal to the number 24C in hexadecimal? [1] (2114)8 [2] (1114)8 [3] (001001001100)2 [4] (001001001101)2 Which of the number in octa

l is equal to the number CCC in hexadecimal? [1] ( …… 此处隐藏：5434字，全部文档内容请下载后查看。喜欢就下载吧 ……