OCR GCSE (J277)1.2 Images and Sound (Computer Science)
🇬🇧
In English
In English
Practice Known Questions
Stay up to date with your due questions
Complete 5 questions to enable practice
Exams
Exam: Test your skills
Course needs 15 questions
Learn New Questions
Manual Mode [BETA]
The course owner has not enabled manual mode
Specific modes
Learn with flashcards
Listening & SpellingSpelling: Type what you hear
multiple choiceMultiple choice mode
SpeakingAnswer with voice
Speaking & ListeningPractice pronunciation
TypingTyping only mode
OCR GCSE (J277)1.2 Images and Sound (Computer Science) - Leaderboard
OCR GCSE (J277)1.2 Images and Sound (Computer Science) - Details
Levels:
Questions:
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 |