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William is creating a film for a school project using a digital video camera - OCR - GCSE Computer Science - Question 1 - 2018 - Paper 1
Question 1
William is creating a film for a school project using a digital video camera. (a) The digital video camera has a secondary storage device. (i) Explain why the digi... show full transcript
Worked Solution & Example Answer:William is creating a film for a school project using a digital video camera - OCR - GCSE Computer Science - Question 1 - 2018 - Paper 1
Step 1
Explain why the digital video camera needs secondary storage.
Answer
The digital video camera requires secondary storage for several reasons:
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Long-term Storage: Secondary storage allows for the saving of videos and data even when the camera is turned off, ensuring that files are not lost during power interruptions.
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Capacity: Digital video files can be large, and secondary storage provides additional capacity beyond the camera's internal storage, allowing for more videos to be recorded without needing to delete existing files.
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Transfer of Data: It is essential for transferring recorded videos to other devices, such as computers, for editing and sharing.
Step 2
Explain why solid state storage is the most appropriate type of storage for the digital video camera.
Answer
Solid state storage is the most appropriate type for the digital video camera for the following reasons:
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Speed: Solid state drives (SSDs) offer faster read and write speeds compared to traditional hard drives, allowing for quick data transfer and immediate access to video files.
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Durability: Unlike mechanical drives, SSDs have no moving parts, making them more durable and less susceptible to damage from drops or shocks, which is especially important when using a camera in various conditions.
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Lightweight and Compact: SSDs are typically lighter and more compact, making them ideal for portable devices like digital cameras where space and weight can be a concern.
Step 3
Calculate the number of videos that could be stored on the computer if each video was 100MB in size.
Answer
To calculate the number of videos that could be stored on the computer:
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Convert GB to MB: There is 1GB free on the computer. Since 1GB = 1024MB,
- Free storage = 1GB = 1024MB.
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Determine Number of Videos: Each video is 100MB in size, so the number of videos that can be stored is given by:
Since we cannot store a fraction of a video, the computer can hold a total of 10 videos.