8. Hexadecimal Representation
This chapter discusses the representation of numbers in computing, focusing on binary and hexadecimal systems, including integer representation techniques. It explains the concepts of signed and unsigned numbers, particularly through sign-magnitude and two's complement methods. Additionally, it covers how positive and negative ranges of integers are derived, including overflow situations, and introduces the representation of real numbers in floating-point format.
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What we have learnt
- Numbers in computers are primarily represented in binary, with hexadecimal being a more readable format for larger values.
- Positive and negative integers can be represented using different methods, with two's complement being a widely used technique to simplify calculations.
- Floating-point representation allows for a broader range of values by adjusting the position of the decimal point through exponent and mantissa parts.
Key Concepts
- -- Two's Complement
- A method for representing negative numbers in binary using the complement of its positive counterpart, allowing for straightforward arithmetic operations.
- -- Overflow
- A condition that occurs when an arithmetic operation produces a value that is outside the limits of the data type being used.
- -- Floating Point Representation
- A way of representing real numbers in binary that allows for a variable number of decimal places by utilizing a mantissa and exponent.
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