Computer Science AS OCR
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1-1-structure-and-function-of-the-processor as5 主题
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1-2-types-of-processor as3 主题
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1-3-input-output-and-storage as2 主题
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2-1-systems-software as8 主题
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2-3-software-development as5 主题
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2-4-types-of-programming-language as4 主题
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3-1-compression-encryption-and-hashing as3 主题
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3-2-databases as3 主题
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3-3-networks as8 主题
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3-4-web-technologies as13 主题
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html as
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css as
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css-styling as
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javascript as
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variables-and-constants-in-javascript as
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outputs-in-javascript as
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selection-in-javascript- as
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for-loops-in-javascript- as
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while-loops-in-javascript- as
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strings-in-javascript- as
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operators-in-javascript- as
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nested-statements-in-javascript as
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functions-and-procedures-in-javascript as
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html as
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4-1-data-types as8 主题
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4-2-data-structures as4 主题
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4-3-boolean-algebra as1 主题
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5-1-computing-related-legislation as4 主题
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5-2-moral-and-ethical-issues as9 主题
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6-1-thinking-abstractly as3 主题
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6-2-thinking-ahead as1 主题
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6-3-thinking-procedurally as3 主题
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6-4-thinking-logically as2 主题
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6-5-thinking-concurrently as2 主题
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7-1-programming-techniques as9 主题
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8-1-standard-algorithms-and-big-o-notation as8 主题
device-drivers as
Exam code:H046
Device Drivers
What is a device driver?
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A device driver is a piece of software that enables communication between an operating system and specific hardware devices such as:
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Printers
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Graphics cards
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Network cards
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Device drivers allow the OS to control and interact with those devices
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Because many external devices have embedded system software, a driver bridges the gap between a major operating system and a tiny hardware OS
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Device drivers make it possible to perform specific operations on the hardware e.g. a printer driver enables the OS to send print commands and manage print jobs
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Most hardware manufacturers write their own device driver software, meaning a single operating system may have several printer drivers installed
Worked Example
Adding a DVD drive to a computer often requires the installation of a piece of software called a device driver.
State the purpose of a device driver.
[1]
How to answer this question:
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Pick one example of a hardware device and describe what happens between it and the operating system
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Explain that this is made possible through device driver software
Answer:
Example answer that gets full marks:
The purpose of a device driver is to enable the operating system to interact with and control a hardware device. For example, a printer would have an associated device driver so the OS could send or receive data from a printer system.
Acceptable answers you could have given instead:
The purpose of a device driver is to enable communication between an operating system and external hardware.
Responses