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What is meant by Hertz (Hz)?
The SI (International system of units) unit of frequency defined as the number of cycles per second of a periodic phenomenon.
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What is sampling rate?
The number of samples taken per second.
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Why is it difficult to save analogue sound waves in a digital format?
Analogue is continuous data, converting continuous data to discrete values may loose some of the accuracy.
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Name a perpheral that could be used to feed sound into an ADC (Analogue to digital converter).
A microphone.
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What is the difference between analogue and digital data?
Analogue data is continuous, allowing for an infinite number of possible values. Digital data is discrete, allowing for a finite set of values.
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What is the role of an ADC (analogue to digital converter)?
Converts analogue sound into digital signals that can be stored on a computer.
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What is an advantage of Bitmapped images rather than Vector graphics?
Advantage of a bitmapped graphic is that if the image includes continuous areas of colour - the image will store less memory as bitmapped than if it is stored as a vector graphic.
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What are the factors that define a well-defined problem?
- Clearly defined goal - what you want to achieve. - Clearly defined given - the initial solution. - Resources - what is given to you to solve the problem. - Ownership - who is going to solve the problem.
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What are the advantages & disadvantages of First generation programming languages ?
Advantages - it is only language a computer can actually understand. All other languages must be translated into machine code to run. Disadvantage - It's pretty much impossible for humans to read.
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what is meant by First Generation programming languages & what are some basic operators in FGL.
Machine code is the actual sequence of 0's and 1's that a computer can directly decode and run. Basic Operators - Add, Store and Load.
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Second generation programming languages an improvement of FGL. What are the disadvantages of SGL's
- Uses simple letter abbreviations to make machine code easier to remember, read and write. Advantages: Simpler for humans to understand. A simple one-to-one translation of machine code instructions allows direct manipulation of computer.
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What are the disadvantages of Second Generation Programming Languages?
Needs to be translated (Assembled) in order to run. This isn't difficult, but it's an extra step. This is because it's a one-to-one transition of machine code, it's very long-winded and machine rather than problem focused.
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What is a vector graphic & in relation to that what is a drawing list?
Vector graphic: images defined using mathematics and Geometry such as points, lines, curves and shapes or polygons. Allowing for scalability. Objects and properties stored mathematically. Drawing list: a set of commands used to define a vector image.
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Other cards in this set

Card 2

Front

What is sampling rate?

Back

The number of samples taken per second.

Card 3

Front

Why is it difficult to save analogue sound waves in a digital format?

Back

Preview of the front of card 3

Card 4

Front

Name a perpheral that could be used to feed sound into an ADC (Analogue to digital converter).

Back

Preview of the front of card 4

Card 5

Front

What is the difference between analogue and digital data?

Back

Preview of the front of card 5
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