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CHAPTER 4
Operations On Data
(Solutions to Practice Set)
Review Questions
1. Arithmetic operations interpret bit patterns as numbers. Logical operations inter-
pret each bit as a logical value (true orfalse ).
2. The leftmost carry is discarded.
3. The bit allocation can be 1. In this case, the data type normally represents a logical
value.
4. Overflow happens when the result of an arithmetic operation is outside the range
of allocated values.
5. The decimal point of the number with the smaller exponent is shifted to the left
until the exponents are equal.
6. A unary operation takes a single operand. A binary operation takes two operands.
7. The common logical binary operations are: AND, OR, and XOR.
8. A truth table lists all possible input combinations with the corresponding outputs.
9. The NOT operation inverts logical values (bits): it changes true to false and false
to true.
10. The result of an AND operation is true when both of the operands are true.
11. The result of an OR operation is true when one or both of the operands are true.
12. The result of an XOR operator is true when the operands are different.
13. An important property of the AND operator is that if one of the operands is false,
the result is false.
14. An important property of the OR operator is that if one of the operands is true, the
result is true.
15. An important property of the XOR operator is tha
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