What is Boolean:
Boolean logic is a mathematics-based system for performing logical operations. It is part of an algebraic system developed in the mid 1800s by George Boole, a British mathematician and philosopher. Boolean algebra and Boolean logic are binary (base two) systems, meaning that all elements contain only two possible values (0 or 1, true or false, etc). Boole demonstrated that powerful complex mathematical operations could be performed by using simple binary terms connected by the operators And, Or, or Not. After Boole's death it was discovered that electrical signals could easily and reliably be separated into two (binary) states, low current or high current, allowing complex Boolean algebraic operations to be performed electronically. Thus, Boolean logic became the foundation of computer science and the bases of the digital hardware and software technologies we have today, including Internet search engines.
While almost all modern search engines are based on Boolean logic, and use the Boolean operators And, Or and Not, few of them adhere strictly to Boolean rules.
The goal of Boolify is to help users better understand and perform Internet searches. Boolify utilizes the Google search engine, and therefore it is designed to illustrate Google's search methodology, which varies in some ways from strict Boolean logic.
Ask Others or Share Your Tips:
Join our discussion forums to ask others about using Boolify, or to share your ideas!
Using Boolify:
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Basic Search Operations: Keywords This short video introduces basic search concepts, including how to add keywords and phrases to the Boolify engine. |
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Basic Search Operations: Saving Searches and Changing Options This short video demonstrates saving searches, and indicates how results can be explored across web, news and image results sets. |
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Intermediate Search Operations: Using OR and NOT in searches This short video demonstrates how to use OR and NOT to refine and limit search results. |
More about Boolean:
You can view information about George Boole, the inventor of Boolean, on Wikipeidia, or read his book at Project Gutenburg.