Unit 11 Flashcards
Process of storing and locating files properly.
(1) Give a name to every file.
(2) Make folders to hold similar types of files.
(3) Keep folders in hierarchical structure.
What is the importance of organizing files?
The user knows where to look for files when they need to find them next time they want to open the files. The goal of file management is to make finding files easier and faster.
What are the procedures to make sure files have appropriate names?
(1) Include date of document made.
(2) Indicate what is in the document.
(3) Specify which folder the file should be stored in.
Importance of ensuring files are saved in proper format.
Different applications have their own methods of formatting data when their files are saved so that they can be opened and edited by the program in the future.
Use of saving and exporting in a generic file format.
generic file format allows files to be opened on different computer types and different computer applications.
Explain lossy compression.
Works by permanently deleting some of the data in the file, the original file cannot be recovered, thus it cannot be used with text files.
Explain how lossy compression works for images.
The program analyzes the image and finds areas where there are only slight differences that we might not be able to distinguish and gives them the same value so that the file can be rewritten with fewer bits.
Explain how lossy compression works for audio files.
Digital audio files contain data in waveform format. There are frequencies and tones and slight differences in volume we cannot hear, these are removed to reduce size.
Explain lossless compression.
Reduces files with no loss of data during the process. This allows the original file to be recreated when it is needed. Nothing is lost.
Explain the functionality of lossless compression.
This works by finding repeated data in a file and saves the index of where it should be included.
This can be used for text and numerical documents where it is essential to not lose data.
Both ZIP and RAR compression use lossless compression.
Define drive.
A disk drive on which data is stored.
Define import.
To start a file in an application of a different format so that it can be used in a different application.
Define hierarchical structure.
A file system that organizes files in a top to bottom structure.
Define open.
To start a file in its own application to make the file ready to use or read.
Define parent directory.
A directory in which another directory is displayed.
Define file name.
A unique identification for a file stored on a storage medium.
Define version control.
The process by which drafts and different versions of a document or applications are recorded and managed.
Define sceenshot.
An image of data displayed on screen.
Define hypertext markup language.
Code used to create web pages.
Define export.
Saving a file in a particular format in one application so that it can be opened by other applications.
Define comma separated values.
This file format can be used on data saved in a table structured format, such as a spreadsheet or database.
Define generic file type.
A file that can be opened by any operating system using a standard application.
What does CSV stand for?
comma separated values.
Define compressed.
Any file that contains one or more files or directories that is smaller than their original file.
Define uncompressed.
A file returned to its original state.
Define compression algorithm.
A method to compress files, reducing size and making them more portable.
Define lossy compression.
A method of compressing data where some data is discarded.
Lossless compression.
A method of compressing files where no data is discarded.
Define transmissions.
Transferring something from one place to another.
Define hypertext markup language.
Code used to create web pages.
What does HTML stand for?
Hypertext markup language.
Define RAW file
Images which have not be compressed and contain all the data are known as raw files.
Define .txt file.
Files that are plain text and can be opened by any word processor.
Define .rtf file
rich text files
what does RTF stand for?
Rich Text Format.
What does pdf stand for?
Portable document format.
Define portable document format.
Image format that preserves page layout, cannot be modified but can easily be shared and printed.
What does CSS stand for?
Cascading stylesheet.
What does JPG stand for?
joint photographic expert group
What does PNG stand for?
portable network graphics
What does GIF stand for?
graphics interchange format
What does ZIP stand for?
compressed file
Define cascading stylesheet.
File attached to one or more web pages to define style to be used, ex: font, font size, color scheme.
What does RAR stand for?
Roshal Archive.
Define css
File attached to one or more web pages to define style to be used, ex: font, font size, color scheme.
Define JPG
File stores still image data in compressed form.
Define png
Image format used for webpages. They are useful as their background can be made transparent not covering what is underneath.
Define GIF
Supports 265 different colors with a small file size making them suitable for webpages and supports animations.
Define ZIP
May contain one or more files or directories that have been compressed so that they require less space. Useful for archiving files and sending data.
Define RAR
Creates file containing compressed directories with a high compression ratio. Creates smaller files compared to ZIP. RAR files are decompressed faster.
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