Understanding Computer Systems 13 Speed and optimisation considerations

Understanding Computer Systems 13. Speed and optimisation considerations when transferring data

Today’s Learning Objective • “Understand about speed and optimisation considerations when transferring data. ” • Write the lesson Learning Objective onto your Self-Assessment Sheet. Understanding Computer 30 January 2022

Learning Outcomes • All students must be able to identify(E) and describe(D) what the terms render and optimisation mean in relation to data transfer speeds. • Most students will be able to explain(C) the importance of optimisation and its relevance on rendering speeds. • Some students will be able to analyse(B) and link(A) this knowledge in order to appreciate the effect modern broadband has had on optimisation issues. Understanding Computer 30 January 2022

“Ahhh, I’ve had enough of this website!” • What are the factors that annoy users when loading websites? • The loading time of websites is one of the most important factors. • How long would you wait for a webpage to load before giving up? Understanding Computer “Understand about speed and optimisation considerations when transferring data. ” LO

Activity 1 • We are going to test the speed of several webpages. • Open: Shared/ICT/2014/Year 10/R 001/Web site Optimisation worksheet. docx Understanding Computer “Understand about speed and optimisation considerations when transferring data. ” LO

http: //tools. pingdom. com/ Load the webpage Type the website address from your worksheet Record the load time Record the website size Understanding Computer “Understand about speed and optimisation considerations when transferring data. ” LO

http: //whichloadsfaster. com/ Test this option Record the result Try your own comparisons and record your results. Understanding Computer “Understand about speed and optimisation considerations when transferring data. ” LO

Webpage Design • What factors effect how fast a webpage loads? • Hands up! Understanding Computer “Understand about speed and optimisation considerations when transferring data. ” LO

Optimising the page. Video or Animations Pictures and logos Text Buttons and links Code to run the website Understanding Computer “Understand about speed and optimisation considerations when transferring data. ” LO

Optimising the page so that it loads quickly. • Do you need it on the page? • Don’t have old code that doesn’t work or is out of date. Use the most up to date software. • Optimise your file formats – Can you choose a different type of file that makes the file size smaller? Think of Lesson 9 (File formats). Understanding Computer “Understand about speed and optimisation considerations when transferring data. ” LO

What web browser to use? • What web browser did you use for Activity 1? • What other web browsers do you know of? Understanding Computer “Understand about speed and optimisation considerations when transferring data. ” LO

How browsers render a webpage Web server Some web browsers are quicker than others at has website rendering webpages. code. Website code So…. . is sent from web server to the user’s computer when the user types the webpage address. But the code is for computers not humans! Understanding Computer Web browser RENDERS machine code to a webpage that humans can understand! “Understand about speed and optimisation considerations when transferring data. ” LO

Lets have a competition between the browsers! • Half of the class, you are: • Other half, you are: Understanding Computer Understand about speed and optimisation considerations when transferring data. ” LO

Browser Wars. • We are going to load the same test on two different Browsers and see which is fastest! • The test will find out how fast each browser can render HTML 5, a new type of webpage code. • Test page Understanding Computer Understand about speed and optimisation considerations when transferring data. ” LO

Question? • How will optimising your webpage help render your webpage quicker? Understanding Computer Understand about speed and optimisation considerations when transferring data. ” LO

Complete Worksheet 2 • Try to complete as many sections as you can. • Open: hared/ICT/2014/Year 10/R 001/ Evaluation Worksheet 2. docx • The colour code of each section matches the ALL, MOST SOME objective for today. Understanding Computer Understand about speed and optimisation considerations when transferring data. ” LO

Today’s Learning Objective • “Understand about speed and optimisation considerations when transferring data. ” • Put , or onto your Self Assessment sheet to show whether or not you have achieved today’s learning objective. Understanding Computer 30 January 2022