File formats and extensions in Intro to Computing - Flowchart & Logic Diagram

Process Overview

File formats and extensions help computers understand what type of data a file holds and which program can open it. This process shows how a computer uses the file extension to decide how to handle a file.

Flowchart

User selects a file

↓

Computer reads file extension

↓

Open with [Show error: "Unknown file type"

This flowchart shows how a computer uses the file extension to decide whether it can open the file with a known program or show an error if the extension is unknown.

Step-by-Step Trace - 4 Steps

Step 1: User selects a file named 'photo.jpg'.

Step 2: Computer reads the file extension '.jpg'.

Step 3: Computer checks if '.jpg' is a recognized extension.

Step 4: Computer opens the file with the associated image viewer program.

Diagram

File: photo.jpg
+----------------+
| photo          |
| .jpg (ext)     |
+----------------+
        |
        v
+----------------+
| Image Viewer   |
| Program        |
+----------------+

This diagram shows a file named 'photo.jpg' with its extension '.jpg' linked to the Image Viewer program that can open it.

Flowchart Quiz - 3 Questions

What does the computer check first when opening a file?

A The file creation date

B The file extension

C The file size

D The file color

Key Result

File extensions act like labels that tell the computer which program should open a file.