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Unformatted text preview: the number. 5.
What will be the total number of different symbols or digits and the maximum
value of a single digit for the following number systems:
(a) Number system with base 5
(b) Number system with base 20
(c) Number system with base 9
(d) Number system with base 12
6.
What is a 'bit' in computer terminology? How many different patterns of bits are
possible with
(a) 6 bits
(b) 7 bits
(c) 8 bits
7.
Explain the meaning of the term "memory dump".
8. Why are octal and/or hexadecimal number systems used as shortcut notation?
9.
Find out the decimal equivalent of the following binary numbers:
(a) 1101011
(f) 1000
(b) 11010
(g) 10110001100
(c) 10110011
(h) 1010101100
(d) 11011101
(i) 110001
(e) 1110101
(j) 111
10. Find out the octal equivalent of the binary numbers of Question 9.
11. Find out the hexadecimal equivalent of the binary numbers of Question 9.
12. Convert the following numbers to decimal numbers:
(a) 1101102
(c) 2A3B16
(b) 25736
(d) 12349
13. Convert the following decimal numbers to binary numbers:
(a) 43510
(c) 3210
(b) 169410
(d) 135,o
14. Convert the decimal numbers of Question 13 to octal numbers.
15. Convert the decimal numbers of Question 13 to hexadecimal numbers.
16. Carry out the following conversions:
(a) 1256 = ?4
(b) 249 = ?3
(c) ABC16 = ?8
17. Convert the following numbers to their binary equivalent:
(a) 2AC16
(c) 26148
(b) FAB16
(d) 5628
18. Find the decimal equivalent of the following numbers:
(a) lll.Oh
(c) 247.658
(b) 1001.0112
(d) A2B.D416 Chapter 4
Computer Codes
In the previous chapter we have discussed about true or "pure" binary numbers. In this
chapter we will see how these binary numbers are coded to represent characters in
computers. Thus the goal of this chapter is to present the formats used in computers to
record data. Although many coding schemes have been developed over the years, we will
be discussing only the most commonly used computer codes.
Numeric data is not the only form of data that is to be handled by a computer. We often
require to...
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This document was uploaded on 04/07/2014.
 Spring '14

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