Assignment 1
CIS 480/580
Due Date: Tuesday, May 26th, 2020
Total points = 20
Chapter 1:
Q1 (Q13 of text book):
Name three appliances that are candidates for being run by an embedded CPU? (2 points)
Q2 (Q14 of text book)
At a certain point in time, a transistor on a chip was 0.1 micron in diameter. According to Moore’s law,
how big would a transistor be on next year’s model? (2 points)
Chapter 2
Q3 (Q3 of text book)
On a computer 1, all instructions take 10 nsec to execute. On computer 2, they all take 5 nsec to execute.
Can you say for certain that computer 2 is faster? Discuss. Hint: pipeline. (2 points)
Q 4 (Q11 of text book)
A certain computer can be equipped with 1,073,741,824 bytes of memory. Why would a manufacturer
choose such a peculiar number, instead of an easy-to-remember number like 1,000,000,000? (2 points)
Q5 (not from text book)
Device a (11,7) Hamming codeword for a 7-bit data field 1010101. Show and explain how the transmitted
codeword will be generated? How it will be confirmed at the receiving end that no errors have occurred
during the transmission? Show with an example, how errors and the locations of the errors will be
detected and corrected. (6 points)
Q6 (Q14 of text book)
In a Hamming code, some bits are “wasted” in the sense that they are used for checking and not for
information. What is the percentage of wasted bits for messages whose total length (data + check bits) is
2
n – 1? Evaluate this expression for values of n from 3 to 10. (3 points)
Q7 (Q17 of text book)The disk, with 4096 bits/sector illustrated in Fig 2-19 of textbook/PowerPoint
slides, has 1024 sector/track and a rotation rate of 7200 RPM. What is the sustained transfer rate of the
disk over one track? (3 points)
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