課程名稱︰計算機概論
課程性質︰必修
課程教師︰黃乾綱
開課學院：工學院
開課系所︰工程科學與海洋工程學系
考試日期（年月日）︰96/11/12
考試時限（分鐘）：約150分鐘
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
(5% for each question. Write down the necessary explanations or details for
each question)
1.[ch1] According to the von Neumann model, the computer is consist of 4
subsystems, including ＿＿, ＿＿, ＿＿, and＿＿
2.[ch1] According to the von Neumann model, ＿＿ are stored in memory
(a) only data (b) only program (c) data and programs (d) none of above
3.[ch2] The ASCII code of "A" is "100 0001". If we write the ASCII code in 1
byte, that would be "0100 0001" or 41(16). What is the hex string of this
word "Computer" in ASCII code?
4.[ch2] For audio CD, the audio signal is sampled 44,100 times per second.
Each sample represented by 65,536 different levels. Besides, we need 2
channels for stereo sounds. How many bits per second are needed to record
a stereo digital audio signal?
5.[ch2] A digital camera is designed to record a video of 30 frames per
second, VGA(640x480), Truecolor (Red, Green, Blue, each color encoded with
8 bits). Using this digital camera, how many bytes do we need to store
1 min video clip in raw data (i.e. without any compression)?
6.[ch2]
(a)How many hexadecimal digits are needed to convert a 7-byte pattern?
(b)How many octal digits are needed to convert a 7-byte pattern?
7.[ch2] Change A96D(16) to ＿＿(8) (change the hexadecimal notation to octal
notation)
8.[ch2,10%]
(a)Transform -260(10) with 16bit allocation by sign and magnitude format.
(b)Transform -260(10) with 16bit allocation by one's complement format.
(c)Transform -260(10) with 16bit allocation by tow's complement format.
9.[ch3]What is the value range of two's complement format? Assume N is the
number of bits in this format.
10.[ch3]What is the result of the following operations:x27A8-x296E=x????
Do the operation in two's complement format.
11.[ch4] What is the result of the following operations:
xCB AND x5A OR x97 XOR x63?
12.[ch4] You need to unset the (2nd, 3rd, 7th) bits of a bit pattern
B1B2B3B4B5B6B7B8, what are the mask and the corresponding operation?
13.[ch4] From the following operations, choose the result will be overflow,
if the numbers and the result are in 8-bit two's complement notation
(a) 24 - 105 (b) 23 - 106 (c) -22 + 107 (d) -21 - 108
14.[ch4] Please show -55.325 in 32-bit IEEE format for single precision of
floating-point number (32-bit)
15.[ch4] How to represent 0.0(10) in IEEE single precision floating-point
format?
16.[ch4,10%] The x71DD3000 and xF0F05000 are the bit patterns of two numbers
that are in IEEE 754 single precision floating-point format.
(a) Please calculate the results of x71DD3000 + xF0F05000
(b) Please calculate the results of x71DD3000 - xF0F05000
Give the hexadecimal value of thIEEE single precision floating-point
format.
17.[ch5] List all types of registers in CPU, and describe their purpose or
usage.
18.[ch5] A computer has 2GB of memory. Each word in this computer is 4 bytes.
How many bits are needed to address any single sord in memory?
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