OCR GCSE (J277)1.2 Images and Sound (Computer Science)
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OCR GCSE (J277)1.2 Images and Sound (Computer Science) - Leaderboard
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14 questions
| 🇬🇧 | 🇬🇧 |
| How do you calculate Text file size? | Bits per character x Number of characters |
| How do you calculate Image file size? | Colour depth x Image height x Image width |
| How do you calculate Sound file size? | Sample rate x Duration in seconds x Bit depth |
| The term px means what? | Pixels |
| How do you work out how many of something you can have on a computer. (Use a document as an example to answer) | Capacity of the Drive/ Document size |
| What are the two (2) diffrent ways of storing images? | Bit Map and Vectors |
| What is a Bit Map? | Images that are made up of diffrent colour squares Each square has a binary value |
| What is a Vector? | The mathematical way to store squares. |
| Finish the sentence: The number of ____ (4 letters) required depends on the number of ______ (6 letters) required. | Bits and colour |
| Finish the sentence: The greater the colour depth and __________ (10 letters), the larger the _____ (5 letters) size | Resolution and image |
| What does Sample Rate mean? | Sample rate is how often you record the amplitude of a sound wave |
| What does Bit Depth mean? | Bit depth is how many diffrent gradations of amplitude that can be represented in a digital wave form |
| How do you calculate Sound File Size? | Number of samples per second x Number of bits per second x Length of samples in seconds |