Description and exemplification of
local and global variables
Category Archives: 6. External Sites
FAQ – Graphics Card Hardware
Description of features of graphics cards for output of video, including:
- role of DAC
- role of DSP (to allow hardware decoding of data stream including MPEG files)
Continue reading FAQ – Graphics Card Hardware
FAQ – Resampling
Pupils often get resampling confused with other multimdia terms.
When a lower resolution graphic is scaled up to a higher resolution, pixellation results, which spoils the look of the graphic. Resampling can be used to smooth out the image with the graphics software making a “best guess” as to the missing information.
This tutorial walks you through resampling on Adobe photoshop and here is one for GIMP.
Binary Conversion
I found a great little site that does binary conversion, “well so does my one pound calculator” I hear you say, well this also shows mantissa and exponent in floating point. Give it a shot.
Stuxnet
Have a think about this virus, how do the virus actions of replication, camouflage, watching & delivery apply?
SVG Example
Using inkscape I created the image below. SVG is a object oriented graphics file format where object are described using attributes.
To get the file into the Glow blog I had to save it as a PNG file, rather than the SVG file format that inkscape uses. Here is a copy of the SVG file as text. Continue reading SVG Example
Lastminute.com
No its not an advertisement for a travel website. It’s what a some of you will have left your studying to.
I have put together an excel spreadsheet that you can use to record and plan your revision for your exam which is in 48 days time.
To use this guide I would set aside 1 – 1.5 hours each day for computing and select a past paper. Using the unit focus for that day I would work through the past paper, doing only questions from that unit. The Diary sheet gives you a place to record which papers you have covered that day.Topics you found hard that require future study should be recorded before you go on to read over your notes.
I have included the arrangements for the units in the spreadsheet so you can use these to plan your study. Use traffic lights to highlight problem areas.
Record everything you do, this gives you a list of topics you still need to cover as well as evidence of study for your parents.
I hope by now you have been on quizlet and made the past paper answer books I told you to collaborate on.
FAQ – Virus actions
- Description of the following virus code actions :
- replication
- camouflage
- watching
- delivery
Personnel in software development
- Identification of the personnel at each stage and brief description of their roles
- client
- systems analyst
- project manager
- programmer
- independent test group
The roles of people in the software development process were covered in the course, let’s go back over them.
The client awards the contract to a software house, they are involved in the analysis stage to answer questions and help create the software specification. The may be used at the testing stage to perform testing on the final product. Their involvent is not required at the other stages as the software specification should give the software hues all the info they need.
Systems analysist works with the client to produce the software specificatio, they are also involved with the design team to help clarify any points in the specification.
The project manager is responsible for the project being delivered on time and in budget, they do not need to have programming experience although this helps. They are involved at all stages of the process.
Programers are involved at the design, implementation, testing, documentation & maintance stages and are responsible for producing a working and correct program.
Independant test groups are used to test the program, this is sometimes classed beta testing. Not being part of the programming teams gives them a more objective view of the program. Often these testing groups are made up of members of it he public as well as specialists.
Glow Learn – Reminder
Although we have not been using this service this year, I have given you all access to it.
- Login to Glow
- Click on My stuff then My Glow learn
- Click on Computing Higher 2011-2012
You will find the resources we used in class as well as other notes.