计算机科学导论复习题(考前必看)
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Which one of the following statements is TRUE?
选择一项：
A. When representing very small fractions, the problem of overflow ma y occur.
B. When using floating-point notation, we usually use a bit to store the radix point.
C. When two’s complement notation is used to represent numeric value s, a circuit for addition combined with a circuit for negating a valu e is sufficient for solving both addition and subtraction problems.
D. All decimal numbers can be represented exactly using binary notati on.
37 21:56:28
An imaginary computer has four data registers (R0 to R3), 1024 words in memory, and 16 different instructions (add, subtract, etc.). What is the minimum size of an instruction in bits if a typical instructio n uses the following format:
add 565 R2.
选择一项：
A. 15
B. 14
C. 12
D. 16
37 21:56:52
Show the result of the following operation:
(x99 AND x33) OR (x00 AND xFF)
选择一项：
A. x33
B. xFF
C. x00
D. x11
37 21:57:07
A computer has 64M
B of memory. Each word is 4 bytes. How many bits ar e needed to address each single word in memory?
选择一项：
A. 13
B. 24
C. 14
37 21:57:21
An audio signal is sampled 8000 times per second. Each sample is repr
esented by 256 different levels. How many bits are needed to represen t this signal?
选择一项：
A. 8*8000
B. 8000
C. 256*8000
D. 7*8000
37 21:57:34
If the memory address space is 8MB and the word size is 8 bits, then bits are needed to access each word.
选择一项：
A. 23
B. 10
C. 8
D. 24
37 21:57:48
In the following, which one represents the largest capacity?
选择一项：
A. 1TB
B. 1024KB
C. 1024MB
D. 100GB
37 21:58:01
Show the following number in 32-bit IEEE format:
+2-4*1.01110011
选择一项：
A. 1,00000100,01110011
B. 0,01111011,01110011000000000000000
C. 1,01111011,01110011000000000000000
D. 0,01111011,10111001100000000000000
37 21:58:13
Given the binary number 00100010 , which one of the following is the corresponding decimal number?
选择一项：
A. 36
B. 20
C. 34
D. 68
37 21:58:27
A gray scale picture is digitized using four different gray levels. I f the picture is composed of 100*100 pixels, how many bits are needed to represent the picture?
选择一项：
A. 30000
B. 20000
C. 80000
D. 40000