March 2015
Intermediate to advanced
424 pages
10h 53m
English
Content preview from Programmable Logic Controllers, 6th Edition
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Chapter 3
Digital Systems
Abstract
In this chapter the various number systems are looked at, namely denary, binary, octal, hexadecimal and binary coded decimal. Binary arithmetic is developed. Combinational and sequential logic systems are introduced.
Keywords
Denary
binary
octal
hexadecimal and binary coded decimal number systems
logic systems
Digital systems work with inputs, which are essentially just off/on signals, with the two signal levels represented by 0 and 1. These are termed binary digits. The number system used for everyday calculations is the denary or decimal system. This is based on the use of 10 digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. With a number represented by this system, the digit position in the number indicates the ...
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