Exam (elaborations)
A Level Computer Science AQA, Binary Representation of Images and Sound 2024 Exam Review
- Course
- Institution
A Level Computer Science AQA, Binary Representation of Images and Sound 2024 Exam Review
[Show more]
Seller
Follow
RevisionKing
Reviews received
Content preview
A Level Computer Science AQA, BinaryRepresentation of Images and Sound
2024 Exam Review
Describe how bit patterns may represent other forms of
data, including graphics and sound. - Answer>>Bit
patterns can be used to store information about other
forms of data, for example images can be stored using the
images height and width in pixels with the colour depth
and sound can be stored as digital samples of the original
sound.
Understand the difference between analogue and digital
data. - Answer>>Analogue data is a continuous wave
recorded in its original form, when analogue waveforms
are sampled at intervals and turned into a discrete set of
numbers it produces digital data.
Understand the difference between analogue and digital
signals.. - Answer>>Analogue: a continuous signal
which represents physical measurements. Digital: discrete
time signals generated by digital modulation.
Describe the principles of operation of an analogue to
digital converter (ADC) - Answer>>A microphone
converts the sound energy into electrical energy. The ADC
samples the analogue data at a given frequency,
measures the amplitude of the wave at each point and
converts it into a binary value using the resolution of each
sample.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller RevisionKing. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
73314 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now