Книга: Advanced PIC Microcontroller Projects in C

1.5.4 Hexadecimal Number System

1.5.4 Hexadecimal Number System

In the hexadecimal number system, the valid numbers are: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F. A subscript 16 or subscript H indicates that a number is in hexadecimal format. For example, hexadecimal number 1F can be written as 1F₁₆ or as 1F_H. In general, a hexadecimal number is represented as:

an ? 16n + a_n–1 ? 16^n–1 + a_n–2 ? 16^n–2 + ……… + a₀ ? 16⁰

For example, hexadecimal number 2AC₁₆ can be shown as:

2AC₁₆ = 2 ? 16² + 10 ? 16¹ + 12 ? 16⁰

Similarly, hexadecimal number 3FFE₁₆ can be shown as:

3FFE₁₆ = 3 ? 16³ + 15 ? 16² + 15 ? 16¹ + 14 ? 16⁰

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