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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 important reasons:
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Long-term Storage: Secondary storage provides a means to store data permanently or for an extended period, ensuring that videos are not lost when the camera is powered off.
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Large Capacity: Digital video files can be quite large, particularly high-definition recordings. Secondary storage devices offer greater capacity compared to primary storage (like RAM), allowing for more videos to be stored without the need for immediate transfer.
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Transfer to Other Devices: It enables transferring video footage from the camera to other devices for editing and sharing, ensuring versatility in how the content can be used.
Step 2
Explain why solid state storage is the most appropriate type of storage for the digital video camera.
Answer
Solid state storage (SSD) is particularly suited for digital video cameras for several reasons:
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Speed: SSDs have faster read and write speeds compared to traditional hard drives, which is crucial for quickly saving high-definition video files.
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Durability: Without moving parts, SSDs are more resistant to physical shock and damage, providing better reliability when used in a camera that may be subject to movement.
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Lightweight and Compact: SSDs tend to be smaller and lighter, making them an ideal choice for the portable nature of digital video cameras.
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Energy Efficiency: SSDs consume less power, which is beneficial for battery-operated devices like digital cameras, prolonging battery life during filming.
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 can be stored on a computer with 1GB of free storage, first convert gigabytes to megabytes:
1 GB = 1024 MB.
Given that each video is 100 MB in size, the calculation would be:
Since you cannot store a fraction of a video, you can store 10 videos.