Ocr compute Study guides, Class notes & Summaries
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OCR COMPUTER SCIENCE GCSE NOTES PT 1 (I will make more)
- Summary • 8 pages • 2023
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This document consists of a a section of a summary of GCSE Computer Science. This is not all of paper 1 content, and I am happy to make more parts so the full CS Paper 1 notes are done. I am currently a CS A-level student who managed to get a 8 in GCSE. I recommend students to use this especially as there was a huge outbreak due to GCSE 2023 PAPER 2. I am willing to make notes on Paper 2 content too!
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GCSE OCR COMPUTER SCIENCE – NETWORK EXAM QUESTIONS AND ANSWERS
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What is a network? 
A network is a set of connected computers and other devices in order to share resources. This includes files, application software and hardware. 
 
 
 
What are the two types of network? 
LAN and WAN 
 
 
 
What is a LAN? 
Local Area Network - covers a small geographical area 
 
 
 
What is a WAN? 
Wide Area Network - covers a large geographical area 
 
 
 
What is network infrastructure? 
Network infrastructure is the hardware and software resources of an entire network that...
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OCR Computer Science A Level Definitions Exam 2024 Qustions & Answers 100% accurate!
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OCR Computer Science A Level Definitions Exam 2024 Qustions & Answers 100% accurate! 
 
Arithmetic and Logic Unit (ALU) - ANSWERSThe part of the CPU where data is processed and manipulated. This processing and manipulation normally consists of arithmetic operations or logical comparisons allowing a program to make decisions. 
 
Control Unit (CU) - ANSWERSThe part of the CPU that manages the execution of instructions. The control unit fetches each instruction in sequence, and decodes and synchron...
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OCR Computer Science A level Questions with Guaranteed Accurate Answers
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PC - correct answer Program counter, contains the address of the next instruction 
 
CIR - correct answer Current Instruction Register: stores the address of the next instruction currently being executed and decoded 
 
MAR - correct answer Memory Address Register, holds relevant memory address (to read from or write to) 
 
MDR - correct answer Memory Data Register, stores data being transferred to and from memory, acts as a buffer 
 
ALU - correct answer Arithmetic and Logic Unit, does all mathe...
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OCR Computer Science A Level Definitions Exam 2024 Qustions & Answers 100% Correct!
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Arithmetic and Logic Unit (ALU) - ANSWERSThe part of the CPU where data is processed and manipulated. This processing and manipulation normally consists of arithmetic operations or logical comparisons allowing a program to make decisions. 
 
Control Unit (CU) - ANSWERSThe part of the CPU that manages the execution of instructions. The control unit fetches each instruction in sequence, and decodes and synchronises it before executing it by sending control signals to other parts of the computer. 
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OCR COMPUTER SCIENCE A LEVEL DEFINITIONS ALREADY PASSED 100%
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OCR COMPUTER SCIENCE A LEVEL DEFINITIONS ALREADY PASSED 100% OCR COMPUTER SCIENCE A LEVEL DEFINITIONS ALREADY PASSED 100% OCR COMPUTER SCIENCE A LEVEL DEFINITIONS ALREADY PASSED 100% OCR COMPUTER SCIENCE A LEVEL DEFINITIONS ALREADY PASSED 100% OCR COMPUTER SCIENCE A LEVEL DEFINITIONS ALREADY PASSED 100% OCR COMPUTER SCIENCE A LEVEL DEFINITIONS ALREADY PASSED 100% OCR COMPUTER SCIENCE A LEVEL DEFINITIONS ALREADY PASSED 100% OCR COMPUTER SCIENCE A LEVEL DEFINITIONS ALREADY PASSED 100% OCR COM...
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A level OCR Computer Science 1.2 Exam 2024 Questions & Answers 100% accurate!
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A level OCR Computer Science 1.2 Exam 2024 Questions & Answers 100% accurate!What does the operating system do? - ANSWERScommunicates between the hardware and (the user and the software) 
Provides an interface for the users 
 
How is the operating system loaded to RAM - ANSWERSThe boot loader in ROM loads the Operating System into RAM 
 
What are the functions of the operating system - ANSWERSUser interface 
Memory management 
Interrupt handling 
Processor scheduling 
 
What is the purpose of th...
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OCR Computer Science A level paper 1 Exam 2024 Questions and Answers 100% Correct!
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OCR Computer Science A level paper 1 Exam 2024 Questions and Answers 100% Correct! 
 
 PC - ANSWERSProgram counter, contains the address of the next instruction 
 
CIR - ANSWERSCurrent Instruction Register: stores the address of the next instruction currently being executed and decoded 
 
MAR - ANSWERSMemory Address Register, holds relevant memory address (to read from or write to) 
 
MDR - ANSWERSMemory Data Register, stores data being transferred to and from memory, acts as a buffer 
 
ALU - A...
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A level OCR Computer Science 1.2 Exam 2024 Questions & Answers 100% Verified!
- Exam (elaborations) • 13 pages • 2024
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What does the operating system do? - ANSWERScommunicates between the hardware and (the user and the software) 
Provides an interface for the users 
 
How is the operating system loaded to RAM - ANSWERSThe boot loader in ROM loads the Operating System into RAM 
 
What are the functions of the operating system - ANSWERSUser interface 
Memory management 
Interrupt handling 
Processor scheduling 
 
What is the purpose of the user interface - ANSWERSGives user an intuitive way of interacting with com...
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OCR Computer Science A level paper 1 Exam 2024 Questions & Answers 100% Correct!
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PC - ANSWERSProgram counter, contains the address of the next instruction 
 
CIR - ANSWERSCurrent Instruction Register: stores the address of the next instruction currently being executed and decoded 
 
MAR - ANSWERSMemory Address Register, holds relevant memory address (to read from or write to) 
 
MDR - ANSWERSMemory Data Register, stores data being transferred to and from memory, acts as a buffer 
 
ALU - ANSWERSArithmetic and Logic Unit, does all mathematical calculations and makes all logic...
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OCR COMPUTER SCIENCE A LEVEL PAPER 1 QUESTIONS WITH COMPLETE SOLUTIONS.
- Exam (elaborations) • 12 pages • 2023
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OCR COMPUTER SCIENCE A LEVEL PAPER 1 QUESTIONS WITH COMPLETE SOLUTIONS. OCR COMPUTER SCIENCE A LEVEL PAPER 1 QUESTIONS WITH COMPLETE SOLUTIONS. OCR COMPUTER SCIENCE A LEVEL PAPER 1 QUESTIONS WITH COMPLETE SOLUTIONS. OCR COMPUTER SCIENCE A LEVEL PAPER 1 QUESTIONS WITH COMPLETE SOLUTIONS. OCR COMPUTER SCIENCE A LEVEL PAPER 1 QUESTIONS WITH COMPLETE SOLUTIONS. OCR COMPUTER SCIENCE A LEVEL PAPER 1 QUESTIONS WITH COMPLETE SOLUTIONS. OCR COMPUTER SCIENCE A LEVEL PAPER 1 QUESTIONS WITH COMPLETE SOLUT...
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