O'Reilly logo

Circuit Design: Know It All by Bob Zeidman, Tim Williams, Robert Pease, Walt Kester, Ian Hickman, Bonnie Baker, Darren Ashby

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 8

Number Systems

Ian Grout

8.1 Introduction

In everyday life, we use the decimal number system (base, or radix, 10), which allows the creation of numbers with digits in the set: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. The ten possible digits are combined to create integer and real numbers. However, base 10 is not the only number system. Digital circuits and systems use the binary (base, or radix, 2) number system, which allows for the creation of numbers with digits in the set: 0, 1.

The 0 and 1 numbers are logic levels (0 = logic 0, 1 = logic 1), which are created by voltages in a circuit:

• In positive logic, 0 is formed by a low voltage level, and 1 is formed by a high voltage level.

• In negative logic, 0 is formed by a high voltage level, and 1 ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required