Site Decommissioned

June 2, 2015 Mr Stratton

Since this is now a expired qualification, this site has been retired. I have left the content here and changed the theme so that it is easier to navigate.

Computing Higher

two weeks to go!

April 22, 2015 Mr Stratton

The exam is two weeks away and we are still in school. I thought that it might be a good idea for everyone to check what materials they have.

You should have the following Scholar notes

Computer Systems
	Data representation
	Computer structure
	Peripherals
	Networking
	Computer software
Software Development
	Software development process
	Software development languages and environments
	High level programming language constructs
	Standard algorithms
Multimedia Technology
	Development process for multimedia applications
	Bit-mapped graphic data
	Digitised sound data
	Video data
	Vector graphics data
	Synthesised sound data
	Implications of the use of multimedia technology

You should also have revision notes for units and past papers. If you are short of materials then please just ask, this is the last year of higher computing, so any notes we have left will be in the recycler by the 7th of May.

Revision

Easter School

April 7, 2015 Mr Stratton

Thank you to everyone who attended. I will email notes used to all pupils, so check your glow email.

3. Multimedia, Computing Higher

Example of Video Resolution

March 23, 2015 Mr Stratton

If you remember last week I discussed old film Vs TV broadcast quality . Well here is a BBC project to re-digitise Laurel and Hardy films. The left hand side of the screen shows the original broadcast quality and the right hand side is the newly digitised HD movie.

3. Multimedia, Computing Higher

Multimedia – Video Framerate

March 19, 2015 Mr Stratton

Today we looked at video and the need for compression. However, remember the important thing for videos is bitrate! Take for example the game Witcher 3. On the PC it can be displayed at 4K, on the PS4 1080p and the xBox One at 900p. The reason for this is the specification of machines and their GPUs. The PC can be upgraded which means that you can spend more money buying better components which can process faster. The consoles are limited by the spec they were designed with, this in turn means that machines with limited processing power can simply not push the number of bits required to display in 4K. However, the PS4 and xbox One claim to be 4K consoles, I guess time will tell.

3. Multimedia

Homework for 19th March

March 13, 2015 Mr Stratton

Please answer these questions

1. 600 x 300 pixels, 24 bit colour depth

2. 600 x 400, 16 bit colour depth

3. 600 x 600, 24 bit colour depth

4. An image is 6 inches by 8 inches, and has a resolution of 1200 dpi. It has a bit depth of 20.
(a) How many colours can the image store?
(b) What will be the file size of the image?

5. A photograph measures 10 inches by 7 inches, and has a resolution of 400 dpi. The number of colours each pixel can store is 65536.
(a) What is the bit depth of the image?
(b) What will be the file size of the image?

Computing Higher, Homework

Scholar homework session

March 9, 2015 Mr Stratton

The next Scholar homework session is on Wednesday 11th at 7.30pm

This session covers the Networking topic for the old higher, this is not our optional unit but might help if you feel you need help with the networking component of the computer systems unit.

Computing Higher, Homework