IBDP Computer Science IA

Important information about the

IBDP Computer Science Internal Assessment

Screencasting & File Requirements

Mac:

• http://digitalwriting101.net/content/how-to-make-a-screencast-with-quicktime-x-for-mac/

Windows:

• http://readwrite.com/2015/05/26/screencasting-windows-pc

Ensure that your screencast is about 5 minutes long, and in MP4, MOV, M4V format;
Maximum size 500 MB

Formatting of work for IBDP Computer Science IA

• Arial font size 12 (where the language / script supports it)
• Double-line spacing
• Numbered pages
• Portrait orientation (rather than landscape) – except where it is necessary to accommodate a specific item such as a graph or illustration
• DOC, DOCX, PDF or RTF

Bits and stuff

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

• http://webstyleguide.com/wsg2/graphics/displays.html
• http://en.wikipedia.org/wiki/Color_depth
• http://electronics.howstuffworks.com/question487.htm Analog vs Digital Audio
• http://www.sevenforums.com/installation-setup/86886-32-bit-vs-64-bit-comparison.html
• http://en.wikipedia.org/wiki/64-bit_computing

IB Computer Science Topic 2: Computer Organisation - Binary representation

Firefox 5 Released

Yes, Firefox 5 is out! Download it here, unless you are using Ubuntu 11.04.

If you are a running Natty Narwhal, all you need to do is run the Update Manager, and that's it!


Sources:
Mozilla
Softpedia

Day 1 with Snow Leopard

Let me start by saying that I'm a fan of clean installs, so don't expect to find any information about upgrading issues here.

So, what you'll find here is a summary of how I've set up Snow Leopard from scratch.

Make Leopard boot in 64 bit mode

For selected Macs models only*, you can enable this. By default, all Macs except Xserves (server machines) boot in 32 bit mode.

*Which models?

Open the Terminal and type the following:

ioreg -l -p IODeviceTree | grep firmware-abi

If you get the following output, you're all set to go. Otherwise, skip this section.

| | "firmware-abi" = <"EFI64">

OK, you're happy. You got the EFI64 message (that means your Extensible Firmware Interface is 64 bit) and (still inside the Terminal, type:

sudo nano /Library/Preferences/SystemConfiguration/com.apple.Boot.plist

Type in your password when asked. A handy text editor will open a configuration file. Carefully, change it so it looks like this:

Kernel

mach_kernel

Kernel Flags

arch=x86_64

So, the idea is to insert the line

arch=x86_64

Right after the "Kernel Flags" section. Press control and X simultaneously, then Y, then return. Now we're done. Restart, then open the Terminal again, and type:

uname -a

If you get something like the following, the magic worked! Congrats!

Darwin xxxxxxx 10.1.2 Darwin Kernel Version 10.1.2: Wed Sep 9 23:09:02 PDT 2009; root:xnu-1486.1.8~1/RELEASE_X86_64 x86_64

2D Dock

Yes, we'll be using the Terminal utility again. Open it, and type

defaults write com.apple.dock no-glass -boolean YES

killall Dock

To set the Dock to a 2D look, or

defaults write com.apple.dock no-glass -boolean NO

killall Dock

To (re)set it to the 3D glassy look. I prefer 2D myself because it's easier to see which apps are open (the little dot).

Install MS Office 2008 without Rosetta

Rosetta provide PowerPC support for Intel Macs, and is not installed by default in Snow Leopard. I find a waste of space and time to install it, so... Guess what! Terminal again. I open it at login, as you may guess.

Obviously, you need to insert the MS Office 2008 DVD into your Mac's optical drive. After that, type inside the Terminal the following:

sudo installer -package /Volumes/Microsoft\ Office\ 2008/Office\ Installer.mpkg/ -target /

Type in your password, and wait. Wait! It takes a while, even on your shiny new Snow Leopard Mac or your recently upgraded system. You will get the familiar prompt back once the installation is done. No nags, no questions asked, just an old fashioned, straightforward install.

Don't run anything yet. First, download and install all available updates first. Just go to http://www.microsoft.com/mac/downloads.mspx to fetch them, then install them.

Adobe Photoshop Elements 6.0

Nothing. You don't have to do anything. It's one of my favourite applications... I would recommend you, however, to run the Adobe Updater before you run any Adobe application. In the case of a default Elements 6.0 installation, you can find it in

Applications > Utilities > Adobe Utilities > Adobe Updater

or similar. Sometimes there's a number after updater showing the version of the utility (i.e. 4, 5)

Best luck and enjoy your Mac!

Twitterholics

Are you into Twitter?

If so, this blog entry with 11 Free Twitter clients may be interesting to you.

This post has similar information, specifically for Linux: "Six Twitter clients for the Linux desktop and one for the road".

Personally, I use the web interface when posting, and/or Twitterrific (available for the iPhone or as a desktop Mac application.

You may also want to check Tweetie for Mac OS X and MyTweeter for Windows.

The nice and glossy icon used in this post is from AODdesign!

GarageBand-like applications for Windows

If you have ever used GarageBand (included with iLife, from Apple), but are a Windows user, you probably would like something similar that you could use in your Windows PC at home...

Fortunately, there are alternatives such as:

• Acid Xpress (free, but you also have to download loops to make it work)
  
• Music Maker --trials only-- (classic & premium) by Magix
  
• Cakewalk's Music Creator (no trial available)
• and Acid Pro by Sony (trial)

My recommendation: Music Maker by Magix.