Exploring Computer Science Search Engine Basics Exploring Computer Science

Search Engines Search Engines are types of Application Software. They allow a user to find information on the internet There are several search engines available Google Search Bing Yahoo Ask.com Ask Jeeves Dog Pile Google Scholar Search Engines

Surfing – the term we use when exploring the Internet Hit – the term used when you connect to the page you are looking for. Link – allows you to jump from one site to another. Cyber Chat – Chatting with someone on the Internet. Often called Instant Messaging Common Internet Terms

.ORG Non-Profit Organizations .INT International .MIL Military .Com Commercial .Edu Educational .NET Network .GOV Government .ORG Non-Profit Organizations .INT International .MIL Military Common Domains

What Privacy? NOTHING is private on the internet. All visits to websites are tracked using cookies and data logs Passwords can help protect your information on the internet. Internet Privacy

Boolean Operators These are terms used to help find what you are looking for in a search engine Effective Searching

Boolean Logic Effective Searching Boolean logic is a form of algebra. All values are reduced to either TRUE or FALSE. Boolean logic is especially important for computer science because it fits nicely with the binary numbering system, in which each bit has a value of either 1 or 0. Effective Searching

And (+) Narrows your search Or Broadens your search Boolean Keywords And (+) Narrows your search Or Broadens your search Not (-) Excludes concepts Effective Searching

dairy products AND export AND Europe Boolean Examples Rivers AND Salinity dairy products AND export AND Europe Effective Searching

The OR operator (either, any) Boolean Examples The OR operator (either, any) fruit OR vegetables fruit OR vegetables OR cereal Effective Searching

Boolean Examples The NOT operator fruit NOT apples Effective Searching Look at the Boolean Machine http://rockwellschrock.com/rbs3k/boolean/index.htm Effective Searching

Boolean Examples Nesting Effective Searching When more than one element is in parentheses, the sequence is left to right. This is called "nesting." (foxes OR rabbits) AND pest control foxes OR rabbits AND pest control (animal pests OR pest animals) NOT rabbits Parentheses should be used to group terms joined by OR when there is any other operator in the search. Effective Searching

Order of precedence of Boolean operators Boolean Examples Order of precedence of Boolean operators The order of operations is: AND, NOT, OR Parentheses are used to override priority. Expressions in parentheses are processed first. Parentheses are used to organize the sequence and groups of concepts. Effective Searching