Ocr gcse computer science - Study guides, Revision notes & Summaries

OCR GCSE Computer Science 9 - 1 (Component 1) Questions & Correct Answers/ Graded A+

Arithmetic Logic Unit (ALU) Performs operations on data e.g. Addition, subtraction Control Unit (CU) Coordinating activities of the CPU Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:01 / 0:15 Full screen Registers Quick, small stores of data within the CPU Memory Address Register (MAR) Holds memory address for data or a instruction about to be used by the CPU Memory Data Register (MDR) Holds actual data o...

ocr GCSE Computer Science J277-02 June2023 Mark Scheme.

ocr GCSE Computer Science J277-01 June2023 Mark Scheme.

OCR GCSE COMPUTER SCIENCE EXAM QUESTIONS AND ANSWERS

This is the final mark scheme

Define what is meant by abstraction. Abstraction means removing unnecessary details to focus on the important elements. What is an algorithm? An algorithm is a step-by-step procedure for solving problems. Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:01 / 0:15 Full screen An algorithm can be written and displayed as plain, written text. State two other ways of displaying algorithms. Pseudocode Flow diagrams Defi...

OCR GCSE Computer Science J276/01 Computer Systems Exam QuestionsAli’s tablet computer has an operating system. Complete the following description of the functions of an operating system by selecting theappropriate missing words from those in the box. user drivers directories hardware interface multitasking output peripherals printers processor RAM utility ROM running passwords faster volatile virtual The operating system provides a user .....................................................

What is a stand-alone computer? a computer that is not connected to a network What is a network? two or more electronic devices that are connected together. They can be wired or wireless Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:01 / 0:15 Full screen What are some advantages of using networks? • Communication between users • Sharing of files • Sharing of peripheral devices • Monitoring user activity • A...

Computational thinking The steps you take to find rhe best solution to a complex problem Three key techniques for computational thinking Decomposing - breaking down into smaller problems and solving individually Abstraction - picking out the important bits Algorithmic thinking - logical way of getting from the problem to the solution - steps Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:04 / 0:15 Full screen Writing alg...