Search engines and how they find information in Intro to Computing - Flowchart & Logic Diagram

Process Overview

A search engine helps you find information on the internet by looking through many web pages quickly. It uses special steps to collect, organize, and show the best results for your search words.

Flowchart

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This flowchart shows how a search engine finds information: starting from user input, sending web crawlers to collect data, storing it in an index, matching search words, and showing ranked results.

Step-by-Step Trace - 8 Steps

Step 1: User types search words into the search box.

Step 2: Search engine sends web crawlers to explore the internet.

Step 3: Web crawlers collect data from each visited page.

Step 4: Collected data is stored in the search engine's index.

Step 5: Search engine matches user words with pages in the index.

Step 6: Decision: Are there matching pages?

Step 7: Rank matching pages by relevance and quality.

Step 8: Show the ranked results to the user.

Diagram

 +---------------------+      +---------------------+
 |  Web Pages on Internet|<----|   Web Crawlers      |
 +---------------------+      +---------------------+
            |                            |
            | Data collected             |
            v                            v
 +-----------------------------------------------+
 |           Search Engine Index                  |
 +-----------------------------------------------+
            |
            | Matches search words
            v
 +---------------------+      +---------------------+
 | User Search Query   |----->| Search Engine       |
 +---------------------+      +---------------------+
                                      |
                                      | Ranked results
                                      v
                             +---------------------+
                             | Results shown to user|
                             +---------------------+

This diagram shows how web crawlers collect data from web pages and store it in the search engine's index. When a user searches, the engine matches words in the index and shows ranked results.

Flowchart Quiz - 3 Questions

What is the first step a search engine takes when you enter search words?

A Rank pages by relevance

B Show results to the user

C Send web crawlers to collect data

D Store data in the index

Key Result

Search engines find information by collecting web data, organizing it in an index, and matching your words to show the best results quickly.