A3 Software Investigation group 2 2021 by Lucy https://padlet.com/lchannon2/562nbgs5o5htk4l6 Made with eyes on the prize en-us 2020-09-21 15:44:13 UTC 2025-09-25 02:24:26 UTC hello@padlet.com https://padlet.net/icons/png/1f913.png Learning Target lchannon2 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/764750168 I will be able to explain these terms, including licencing and security issues. I will be able to give real life examples and discuss pros and cons.  Use the https://docs.google.com/presentation/d/17gaQr7m5bsM8mwDJ7fOzJ2ZHhq5a5HWvfKFprARSNXY/edit?usp=sharing and search the web]]> 2020-09-21 15:44:13 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/764750168 Learning Target lchannon2 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/764750185 I will be able to identify a variety of different image file types/formats, and explain their features and real life examples of their uses. .bmp, .jpg. .gif, .png, .svg. Use page 34 of your textbook and search the web]]> 2020-09-21 15:44:13 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/764750185 Learning Target lchannon2 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/764750197 I will be able to explain the difference between these two terms, including characteristics, scalability, file formats/types, file sizes and pros/cons]]> 2020-09-21 15:44:13 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/764750197 Learning Target lchannon2 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/764750216 I will be able to explain the difference between the two, explain the features and explain pros and cons of both]]> 2020-09-21 15:44:13 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/764750216 Learning Target: lchannon2 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/764750232  I will be able to explain what these terms mean, with real life examples and discuss the pros and cons of both.  use the https://docs.google.com/presentation/d/17gaQr7m5bsM8mwDJ7fOzJ2ZHhq5a5HWvfKFprARSNXY/edit?usp=sharing and search the web.]]> 2020-09-21 15:44:13 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/764750232 Learning Target lchannon2 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/764750249 I will be able to identify a variety of different video file formats and explain their features and real life examples of their uses. .avi, .mp4, .mov, .mkv. Use know it all ninja, page 34 in the textbook and search the web.]]> 2020-09-21 15:44:13 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/764750249 https://guides.lib.umich.edu/c.php?g=282942&p=1885348 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765346942 2021-09-24 10:25:35 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765346942 Lossy compression is a type of compression where the data removed during the compression process, cannot be restored. This means once you’ve saved an image as a jpg it will always be of a lower quality, you cannot decompress it back to its original state. https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765347853 2021-09-24 10:26:23 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765347853 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765349060 Lossy advantages and disadvantages

  • Advantages: Very small file sizes and lots of tools, plugins, and software support it.
  • Disadvantages: Quality degrades with higher ratio of compression. Can't get original back after compressing
]]> 2021-09-24 10:27:22 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765349060 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765349377 Lossless advantages and disadvantages

  • Advantages: No loss of quality, slight decreases in image file sizes.
  • Disadvantages: Larger files than if you were to use lossy compression
]]> 2021-09-24 10:27:40 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765349377 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765349879 gifs are bitmap images that are like little video snippets that loop ]]> 2021-09-24 10:28:03 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765349879 https://www.youtube.com/watch?v=5I0niqqJxJw https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765350271 2021-09-24 10:28:21 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765350271 MP4 - Harold https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765350937 This is used for very high quality videos due to it having limited compression options. It has more compression options than AVI video containers as well as being very compatible with a wide variety of video players and even streaming. Big sites like youtube use this as the standard for video uploads.]]> 2021-09-24 10:28:56 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765350937 operating systems https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765350955 an operating system allows you to interact with the computer system as it controls the operations of the computer.]]> 2021-09-24 10:28:57 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765350955 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765351426 2021-09-24 10:29:23 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765351426 Vector: What is it? https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765351916 Vector graphics use mathematics between 3 or more vertices (ngons) to create what is called an "object". ]]> 2021-09-24 10:29:48 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765351916 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765352717 Lossless compression refers to compression in which the image is reduced without any quality loss.]]> 2021-09-24 10:30:26 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765352717 AVI https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765352774 AVI is used to produce high quality video output and has limited compression features meaning file sizes are usually very large. Widely compatible file type which can be used with most media players. It is a good file type for storing video while production but not for sharing online as the file sies are very large]]> 2021-09-24 10:30:29 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765352774 useful link https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765353022 2021-09-24 10:30:44 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765353022 four types of operating system https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765353075
  • Real-Time Operating Systems
  • Single-User, Single-Task OS (single user, single application)
  • Single-User, Multi-tasking OS
  • Multi-user Operating system


    • ]]>     2021-09-24 10:30:47 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765353075     https://www.howtogeek.com/441185/what-is-a-gif-and-how-do-you-use-them/ https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765353477 2021-09-24 10:31:09 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765353477 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765353784 JPEGs and GIFs are both lossy image formats.]]> 2021-09-24 10:31:25 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765353784 Bespoke Software https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765354212 Bespoke softwares are customized softwares for a specified problem or need.
    They are usually made for businesses and aims to meet all of the businesses' requirements.]]>     2021-09-24 10:31:49 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765354212     Raster images https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765354314 Raster images are bitmap images that made up from millions of pixels of colour. They are usually made from photographing or scanning an object. When a raster image is zoomed into you can see each individual pixel making up the image.

    File formats: Jpg,Tiff,Gif,Png,Bmp

    +Pros: Can be used for high quality images
    -Cons: Not good for logos or low resolution images

    ]]>     2021-09-24 10:31:55 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765354314     MKV https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765354445 -MKV is designed for higher quality videos than MP4. 
    -It also has more flexible compression features.
    -However it isnt as compatible with media players like MP4 especially with mobile devices.
    -It is good for streaming and can output ultra HD video.
    -It is a popular container for saving HD videos for distribution on the internet ]]>     2021-09-24 10:32:02 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765354445     https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765354470 Examples of open source software include:

    • Linux 
    • operating system
    • Firefox 
    • web browser
    • Python 
    • programming language
    • Open Office productivity 
    • suite
    • Thunderbird 
    • mail client
    • Apache 
    • web server
    • GIMP image editing software
    • Moodle virtual learning environment
    ]]>     2021-09-24 10:32:03 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765354470     https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765354805 2021-09-24 10:32:19 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765354805 .png https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765355090 - Stands for Portable Network Graphic
    - It is a compressed file format
    - Has a range of colour depths ranging from 8-bit to 32-bit.
    - There's roughly 16.7 million different colours in one picture while allowing a transparent background.
    - The difference between 24-bit and 32-bit is used for the levels of transparency.
    - This file format is commonly used for complex images that require transparency on the internet.
    - PNG uses Lossless compression meaning it can be decompressed to its original image.

    ]]>     2021-09-24 10:32:34 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765355090     Vectors: Advantages? https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765355206 The advantage of vectors is that they are light-weight as they tend to be smaller in size when using the SVG file type, this is because the image data is not stored but the math used to generate that image is. Vector also allows easy scaling without image quality degradation and so they can be scaled 100x and still be incredibly crisp.
    https://whatis.techtarget.com/definition/vector-graphics]]>     2021-09-24 10:32:40 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765355206     https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765355288 2021-09-24 10:32:45 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765355288 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765355321 GIF files are 8-bit, which means that they’re restricted to 256 colors and almost always look grainy. The GIF format also doesn’t support semi-transparency, and GIFs often have a large file size ]]> 2021-09-24 10:32:47 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765355321 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765355641
  • the operating system is fundamental to these computer systems:
    • Networking
    • Security
    • Memory Management
    • Multi-tasking
    • Device drivers

    • ]]>     2021-09-24 10:33:05 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765355641     MOV - Harold https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765356049 Very similar to MP4 to the point where you can convert between MOV and MP4 without having to re-encode the video. It is not compatible with apple products due to apple being trash but otherwise it has the same benefits as MP4, with a very good quality-to-file-size ratio. It is also very good for streaming over the internet.]]> 2021-09-24 10:33:26 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765356049 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765356062 2021-09-24 10:33:28 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765356062 050571 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765356542 2021-09-24 10:33:53 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765356542 Conclusion https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765357463 In conclusion there is no wrong or right choice it all depends on preference for the website. For example, if you run a photography website, lossless along with the WebP format might be a better way to go as you need your images to be crystal clear and still be reduced in file size. Or you could go the lossy route and use a smaller compression ratio.]]> 2021-09-24 10:34:41 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765357463 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765357570 2021-09-24 10:34:47 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765357570 Some factors that affect your OS’s performance https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765357643
    • Hardware
    • Malware
    • Virtual Memory

    ]]>     2021-09-24 10:34:51 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765357643     .bmp https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765359389 - stands for bitmap
    - It uses a 24-bit colour depth.
    - This file type isn't compressed making the file size large.
    - This type of format is mainly used by photographers because they want to use its 'true colours'.
    - Stored on main memory


    ]]>     2021-09-24 10:36:05 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765359389     Off the Shelf softwares https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765359404 Off the Shelf softwares are sometimes called commercial softwares. They are mainly aims a bigger market and use successful solutions. ]]> 2021-09-24 10:36:05 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765359404 jpg https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765359747 - It is a compressed format that has 24-bit colour depth. It has the same colour depth as BMP images but the file sizes are smaller but it uses lossy compression to reduce the number colours being used.
    - Good for photographs. 16.7 million different colours.
    - Lossy compression is where the data removed during the compression process, cannot be restored.
    - You can set the level of compression to get the best quality-to-file size ratio for your needs.
    - Heavily used for storing photos, especially when distributing the photos over the internet, either by email.
    - Offers excellent quality while keep a reasonable file size for sharing online.]]>     2021-09-24 10:36:22 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765359747     preoperatory software https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765362095 Licences are bought for proprietary operating systems and software allow users to use the product but not to alter the source code]]> 2021-09-24 10:38:01 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765362095 GIF https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765362723 - lossless
    - 8bits
    - only 256 colors
    - ideal for web graphics
    - https://www.wix.com/blog/2017/11/gifs-in-social-media/


    ]]>     2021-09-24 10:38:35 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765362723     SVG https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765362777 SVG stands for Scalable Vector Graphics. Features include:
    - Vector File format
    - Capable of relatively simple graphic
    - Used for illustrations on the web
    - Suitable for 2D graphics
    - They can be scaled and compressed they will never lose quality
    -takes up little space
     - SVG images and their behaviours are defined in XML text files
    - They do not rely on Pixels
    - 8 BIT]]>     2021-09-24 10:38:38 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765362777     Vectors: Disadvantages https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765363000 Vectors are not capable of more than one colour per object meaning that multiple objects are needed to create images.]]> 2021-09-24 10:38:49 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765363000 preoperatory software https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765365090 The source code is secret and owned by the software company]]> 2021-09-24 10:40:34 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765365090 Now you know what Proprietary software is, what do you think Open Source software is?The source code for Open Source software is available to read and modifySimpler licencing requirements - no copyright issuesIt is a collaborative effort where more than one programmer contributes to the programming of the codeThere are often communities/forums that provide support and help - dealing with problems together lchannon2 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765365715 2021-09-24 10:41:04 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765365715 Now you know what Proprietary software is, what do you think Open Source software is?The source code can be adapted so the operating system or application software can suit individual needsTo adapt the code you would need to be an experienced, expert user Documentation may be limited leading to poor supportOpen Source software is freeIt may be abandoned by the author, leaving users without supportThere may be security issues due to no control of source codeHowever, it can be more secure as the community of people using the software may identify and fix bugs/errors more quickly lchannon2 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765366120 2021-09-24 10:41:22 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765366120 What do you think Proprietary means?Licences are bought for proprietary operating systems and software allow users to use the product but not to alter the source codeThe source code is secret and owned by the software company lchannon2 https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765366516 2021-09-24 10:41:41 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765366516 open software https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765366828
  • The source code for Open Source software is available to read and modify
    • Simpler licencing requirements - no copyright issues
  • It is a collaborative effort where more than one programmer contributes to the programming of the code


    • ]]>     2021-09-24 10:41:57 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765366828     Bespoke VS Off the Shelf https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765369119 Price: Bespoke softwares are way more expensive than Off the Shelf softwares
    Effectiveness: Bespoke softwares are usually more effective, because they are made for a purpose
    Time: For bespoke software the customer needs to wait until it gets ready, but off the shelf softwares are at the customer as soon as they install it.
    Maintenance: Bespoke software has continuously maintenance while off the shelf software doesn't]]>     2021-09-24 10:43:49 UTC https://padlet.com/lchannon2/562nbgs5o5htk4l6/wish/1765369119