I was asked for more detail about the fetch execute cycle. So I thought I would look for something new and a simpler way to explain it. So if you have a look at this BBC page, you should get a basic overview of what is happening. You can then read what I found on this page, this will help you to understand it a little better.
Then you can read my blog post about it, which also includes a link to an animation.
| Theme: | Arrays |
|---|---|
| Subjects: | Higher Computing |
| Audience: | Student |
| When: | Wednesday, 29 October 2014 7:30 PM |
| Presented by: | Ian King, SCHOLAR Online Tutor for Computing and Information Systems |
| Session link: | http://heriot-watt.adobeconnect.com/scholarhomework (Enter as a Guest) |
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IE test post.
So is this
Good luck in the exam tomorrow. Spend your last day of studying productively, don’t forget to get an early night.
This is always a hot topic at this time of year. It’s been a while since we did procedures, parameters, byVal, Byref & Data Flow
From Shawlands Acc
- Data flow within a program is handled by parameters
- A parameter is a value or a variable which is passed into or out from a subroutine
- The parameters used in a procedure call are ACTUAL parameters
- The parameters used in a procedure definition are called FORMAL parameters
- A parameter is passed BY REFERENCE if it is to by passed into and back out of a procedure
- A parameter is passed BY VALUE if it is to by passed into but NOT back out of a procedure
- Arrays are ALWAYS passed by reference
- The use of parameters means that variables can be kept local to subroutines
- This leads to programs being more reliable and robust
I thought this showed what effect the texture attribute can have on a sphere quite well.
I love mind maps for revision. Here is one for Computer Systems – data representation.
It was created using the excellent freemind.
So you have a lot of exams between now and Computing and you might even have some after Computing, how can you fit in some extra revision?
Well the best way to revise is a little and often, however, let assume you have left it too late and are cramming.
You should be able to do this for multiple subject and if you rotate them you should avoid feeling bored. Remember though when Computing is your next exam, give it your full attention 🙂
I was asked a question on parameter passing today. So we came up with mnemonic to try and help you out.
Knowledge to remember
Mnemonic – Remember you only need to remember one way to work out the reverse.
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