Ocr compute Study guides, Class notes & Summaries

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!

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...

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...

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...

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. ...

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...

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...

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...

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...

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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