Computer-science_A-level_Cie
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computers-and-components6 主题
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logic-gates-and-logic-circuits2 主题
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central-processing-unit-cpu-architecture6 主题
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assembly-language-4 主题
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bit-manipulation1 主题
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operating-systems3 主题
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language-translators2 主题
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data-security3 主题
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data-integrity1 主题
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ethics-and-ownership3 主题
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database-concepts3 主题
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database-management-systems-dbms-1 主题
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data-definition-language-ddl-and-data-manipulation-language-dml1 主题
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computational-thinking-skills1 主题
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algorithms14 主题
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data-types-and-records2 主题
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arrays2 主题
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files1 主题
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introduction-to-abstract-data-types-adt1 主题
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programming-basics1 主题
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constructs2 主题
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structured-programming1 主题
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program-development-life-cycle2 主题
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program-design-2 主题
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program-testing-and-maintenance3 主题
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user-defined-data-types1 主题
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file-organisation-and-access-3 主题
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floating-point-numbers-representation-and-manipulation3 主题
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protocols2 主题
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circuit-switching-packet-switching1 主题
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processors-parallel-processing-and-virtual-machines5 主题
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boolean-algebra-and-logic-circuits4 主题
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purposes-of-an-operating-system-os3 主题
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translation-software3 主题
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encryption-encryption-protocols-and-digital-certificates3 主题
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artificial-intelligence-ai4 主题
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recursion1 主题
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programming-paradigms4 主题
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object-oriented-programming7 主题
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file-processing-and-exception-handling2 主题
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data-representation5 主题
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multimedia3 主题
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compression2 主题
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networks-and-the-internet11 主题
use-of-buffers
Buffers
What is a buffer?
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A buffer is a temporary storage area that holds data while it is being transferred between two devices or processes
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Buffers help manage speed differences between components, ensuring smooth data flow
How buffers work
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Data is collected in the buffer before being processed or output
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When the receiving device is ready, it takes data from the buffer
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This prevents data loss and allows devices with different speeds to communicate effectively
Examples
|
Buffer |
Description |
|---|---|
|
Keyboard |
Stores keystrokes until the processor is ready to handle them |
|
|
Holds print jobs so the processor can move on while the printer outputs the data at its own speed |
|
Video |
Stores a portion of data before playback to prevent pauses caused by network delays |
Examiner Tips and Tricks
Key points
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Buffers are used to synchronise data transfer between fast and slow devices
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They improve efficiency and avoid bottlenecks
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Without buffers, data could be lost or delayed if one device is not ready to process information
Responses