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Computer Science OCR A level H446 Spec. Simplifies teaching by adhering precisely to specification: Detailed, but concise coverage of each section. Great for home-learning & revision. Simple to use.

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TCP ensures that no data is received erroneously or is lost during transport, so packets can be retransmitted and all must me acknowledged by the receiving device. Cambridge Assessment plays a leading role in developing and delivering assessments throughout the world, operating in over 150 work with a range of education providers, including schools, colleges, workplaces and other institutions in both the public and private sectors. Classroom learning is transferred into creating real-world systems through the creation of an independent programming project. Choose OCR and you ve got the reassurance that you re working with one of the UK s leading exam board. Sensors, like ones checking for a lanyard’s NFC chip to open/close school gates, can also have an outer while True loop which infinitely runs, ensuring that the sensor’s value is always being checked, so once an inner condition is met, the gates will open.

of graduates in employment in the UK six months after graduation are working as programmers and software development professionals. This allows the OS to interact with a device and read its data without knowing the specifics of the low-level hardware being used. Lossless compression is important when transferring files such as binary data (like program files for OS updates) or when conserving all original content.It is made up of a series of dedicated, high-transmission fibre-optic cables that ‘peer’ (are connected with) each other, and are owned by large Internet Service Providers (ISPs). The OS provides various functions such as a user interface, memory management, interrupts and interrupt handling, scheduling and device driver management. You are the experts on how your students learn and our aim is to support you in the best way we want Support you with a body of knowledge that grows throughout the lifetime of the Specification Provide you with a range of suggestions so you can select the best activity, approach or context for your particular students Make it easier for you to explore and interact with our resource materials, in particular to develop your own schemes of work Create an ongoing conversation so we can develop materials that work for of useful resourcesYou ll have four main types of subject-specific teaching and learning resources at your fingertips.

Over several passes, code optimisation techniques may remove the for loop and just set x to 0 outside of the loop so that it doesn’t get redefined 10,000 times. Queues can alternatively be completely circular and use pointers to denote the start and end index instead. A URL consists of many components, including the protocol, domain name and path to the specific resource. For example index 1 of the leftmost half’s first list is compared to index 1 of the rightmost half’s first list and the smallest value is written. The failure of any one device (unless it is the switch itself) does not affect the operation of the network as a whole.This can be through GUIs (graphical user interfaces) such as Windows, or through CLIs such as the Command Prompt or the Linux shell.

As a result, the faster this clock is, the faster a processor will be able to fetch, decode and execute instructions.

This is undertaken by having a buffer, either in the disk or in memory, which receives the temporary modifications.

There'sglimpsesofclarityoftheoldspecinthenewonebuthonestly,Ithinkwhoeverwrotethiseitherdidn'tgetpaidenoughorisjustplainlazy. Code optimisation removes redundant instructions and replace inefficient code with code that achieves the same result.What makes A Level Computer Science particularly exciting is its potential to empower you as a problem solver and a creator.

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