Showing posts with label igcse. Show all posts

Sunday, 21 April 2019

Computer Networks

Best of YouTube videos on Computer Networks

Some of these links, rather than pointing to individual videos, will take you to YouTube channels containing many videos on the topic. Note that some videos or parts of a video may not be relevant to your specific syllabus or needs.

https://www.youtube.com/playlist?list=PL7zRJGi6nMRzHkyXpGZJg3KfRSCrF15Jg This playlist also contains videos about CPU cache, BIOS/CMOS/UEFI, printers, and RAM.
https://www.youtube.com/playlist?list=PLDQaRcbiSnqF5U8ffMgZzS7fq1rHUI3Q8 another thorough playlist about networking.
https://youtu.be/svkGASq8mNM Computer Networking Tutorial for Beginners (detailed!)

Tuesday, 27 November 2018

HTML and CSS Online Exercises

The following HTML & CSS exercises have some questions outside the IGCSE ICT syllabus, but I think they can be very useful to practice and prepare. They include hints and answers. I'm adding recommendations on which ones to do and which ones to skip. Quizzes are available at the same website, but are optional, just one more resource to study and remember.

HTML EXERCISES @ https://www.w3schools.com/html/exercise.asp

From HTML Attributes to HTML Lists
Skip HTML quotations
Skip HTML classes and id, but we will study these later, they sometimes appear in the real exams. https://css-tricks.com/the-difference-between-id-and-class/

CSS EXERCISES @ https://www.w3schools.com/css/exercise.asp

Start from CSS Syntax, all the way to ...
CSS Positioning, up to and including exercise 3
Skip CSS Overflow, but ...
Do CSS Align Exercise 1

DO NOT FORGET:
Use validators when in doubt--

The types of CSS and their differences--

In a nutshell: external < internal < inline

Sunday, 25 November 2018

HTML and CSS for ICT

HTML & CSS revision resources for (I)GCSE ICT

To revise at home, may use the following resources to study, revise and prepare for our course's examinations and practicals.

Reference:

https://www.w3schools.com/
http://www.tutorialspoint.com/
https://validator.w3.org/#validate_by_input HTML validator (checks and shows errors)
https://jigsaw.w3.org/css-validator/#validate_by_input CSS validator

Tutorials/Learning tools (note that these may not be IGCSE ICT-specific):

https://youtu.be/bupWPZdXqIA <= excellent video tutorials about HTML & CSS (not IGCSE ICT-specific, detailed and thorough); you may want to skip to video number 6 (CSS basics) if you find the pacing on the slow side at the beginning
https://youtu.be/6mZsGqMHV9E <= IGCSE ICT web authoring taks of the specimen paper 3; author has video tutorials about other practical tasks as well, check his channel
Check the HTML examples from W3Schools and their HTML online exercises as well
They also have CSS examples and CSS exercises
https://www.w3resource.com/html-css-exercise/index.php online exercises to practice HTML & CSS, with answers

Memory training:

Minimum set of HTML tags and CSS selectors

This is a list of what you should know. It is a suggestion and may not be exhaustive; always check and compare against the examination topics and your current syllabus). For example, <!DOCTYPE> and <META> are not included, although you may be asked about them in exams and they are useful to know; I just do not consider them as essential as others.

HTML

<html>
<head>
<body>

<title>
<style>
<h1 … h6>
<p>
<br />
<hr />
<img />
<a href="">
<a href="mailto: ...?subject= …">
<a name="anchor_name">
<a href="# anchor_name">
<b> <strong>
<i> <em>
<u>
<s> <strike>
<sub> <sup>
<ol> <ul>
<li>
<table> <caption> <thead> <tbody> <th> <tr> <td> (also remember colspan and rowspan)

CSS

Size in pixels (at least px and % )
RGB hex notation #000000 ~ #FFFFFF
RGB (decimal notation) – rgb(0,0,0) ~ rgb(255, 255, 255)
width
height
background-color
background
background-repeat
background-image
background-position
color
text-indent
text-align
text-decoration
text-transform
letter-spacing
word-spacing
font
font-family
font-style
font-weight
font-stretch
font-size
font-size-adjust
margin
margin-top
margin-right
margin-bottom
margin-left
padding
padding-top
padding-right
padding-bottom
padding-left
border
border-top
border-bottom
border-right
border-left
border-color
border-top-color
border-right-color
border-bottom-color
border-left-color
border-style
border-top-style
border-right-style
border-bottom-style
border-left-style
border-width
border-top-width
border-right-width
border-bottom-width
border-left-width
table-layout
border-collapse
border-spacing
list-style
list-style-type
list-style-image
list-style-position

Wednesday, 7 November 2018

Databases with FileMaker Pro

If you have to work with FileMaker Pro instead of MS Access, these resources will hopefully make your life a little easier:

Best luck!

Monday, 26 February 2018

Memory and Storage Devices

Videos related to the Computer Architecture topic (memory and storage devices)

https://www.youtube.com/watch?v=NtPc0jI21i0 How a Hard Disk Drive Works
https://www.youtube.com/watch?v=wteUW2sL7bc how do HDDs work
https://www.youtube.com/watch?v=FS3jmgIzwO4 open HDD working
https://www.lifewire.com/what-is-fragmentation-defragmentation-2625884
https://en.wikipedia.org/wiki/Defragmentation nice animation to demonstrate concepts
https://computer.howstuffworks.com/solid-state-drive.htm

https://www.youtube.com/watch?v=dZcszUj5szA memory types
https://www.youtube.com/watch?v=g1N3l1l43kE Main Memory (RAM, ROM and Cache)
https://www.youtube.com/watch?v=ELl3abwYQ90 flash memory
https://blogs.systweak.com/2017/04/how-to-increase-virtual-memory-in-windows-7/
http://www.techiesweb.com/a-small-overview-of-system-virtual-memory-and-windows-paging-concepts/

Wednesday, 22 November 2017

Adders

A webpage with a nice and detailed explanation of half and full adders:

https://www.elprocus.com/half-adder-and-full-adder/

Monday, 30 October 2017

Technology and ethics

A very interesting article on drones... What price progress indeed.

http://www.bbc.com/news/business-41737300

The comments and reflection are up to you. Pros and cons as it is usual with technology.

Monday, 2 October 2017

Analogue vs Digital

These couple of resources may help you understand the difference between analogue and digital data:

Wednesday, 22 March 2017

Network and security

A very comprehensive glossary of network terms, obviously not all required for our examinations and syllabus, but they are extremely valuable.
Also, links to how stuff work's networking and security.

Here is a great Networking Tutorial for beginners with pretty much all computer networking essentials covered.

Although you don't need to memorise the OSI reference model, awareness of the layered nature of networks is very important.

And finally, a slideshow on error detection and correction:

Computer Networks - Error Detection & Error Correction from Saikrishna Tanguturu

Tuesday, 23 August 2016

Data Representation

The following is a list of links used in class to explain concepts related to data representation in computer science. Hope you find them useful, although they may lack the context we gave them in the classroom.

Wednesday, 28 October 2015

SLC

Resources to revise Systems/Software Development Life Cycle:

Monday, 27 April 2015

IB Computer Science Exam Revision

Hi there!

I will be using this blog to save and manage my resources for the computer subjects I teach. I may transfer them later to a wiki, which in my opinion is the ideal format for this, but I want to try the blog format first, as I will do my best to post every time we are meant to have a lesson (both standard and higher levels). If you subscribe, you should get notifications as soon as I post an entry, and perhaps this way you can also study "on the go"/wherever you are.

A full list of topics for IB Computer Science can be found here.
A couple of glossaries of Computer Science terms can be downloaded from our school's online class resources.

Hope you will find this useful. Mainly for my awesome IB Computer Science students, but this may also be useful if you're taking (I)GCSE ICT/Computer Science and similar courses.

I will be working on a "Table of contents" blog entry as well, which I will post separately and link to this entry as well, so if you're interested, keep an eye on this blog!

Thanks for reading and best luck!

tM.

Friday, 6 September 2013

Bits and stuff

A set of interesting links on the impact and application of bit width/resolution:

IB Computer Science Topic 2: Computer Organisation - Binary representation

technomess