Href":"/gcse/computer-science/edexcel/questions","basePath":"/gcse/computer-science/edexcel/hardware/questions","formulaUrl":null,"initialIndex":48,"initialQuestionWindow":[{"id":"731c1667-96b9-4acd-8cf1-52f944051247","revisionId":"bfbddd5b-78a0-4f15-b3eb-7a4416051083","questionNumber":null,"questionType":"LA","specification":"","difficulty":2,"difficultyBand":"easy","totalMarks":1,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"82204e98-7874-4f95-b8ee-232b6c047477","label":null,"content":"An embedded microcontroller in an automated medical pump regulates the dosage of medicine. Identify the internal CPU component that generates the timing and control signals necessary to coordinate the fetch-decode-execute cycle.","markscheme":"- Control Unit (accept CU) B1","marks":1,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"794528e6-3caa-44cc-b860-7e9d27e28614","revisionId":"5beb7e9d-b44a-4368-9dfb-029b035c7272","questionNumber":null,"questionType":"LA","specification":"During the fetch stage of the Fetch-Decode-Execute (FDE) cycle in a Von Neumann processor, data and addresses are moved between memory and the CPU.","difficulty":3,"difficultyBand":"easy","totalMarks":2,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"14ed201c-d5d1-4a13-a165-de9edd2248cd","label":null,"content":"Identify **two** specific registers within the CPU that are directly involved in this fetch stage.","markscheme":"- Identifies the Program Counter (PC) (which holds the address of the next instruction) B1\n- Identifies any other register involved in the fetch stage: Memory Address Register (MAR), Memory Data Register (MDR), or Current Instruction Register (CIR) B1","marks":2,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null},{"id":"7c3e7a8b-2009-43bb-afae-9bc8a54488db","revisionId":"5183dff0-0681-4261-be2d-6c3d743d0fc8","questionNumber":null,"questionType":"LA","specification":"The diagram shows a simplified representation of some CPU registers and main memory during the Fetch-Decode-Execute cycle.\n\n![CPU Registers and Main Memory Interaction](https://assets.mathsgenie.co.uk/aqa-qb/f7b60293-08d1-4d89-b623-62e0b8056781.png)","difficulty":5,"difficultyBand":"easy","totalMarks":2,"sourceTitle":null,"calculatorUse":null,"parts":[{"id":"5308da72-a014-415c-9947-8800988ce131","label":null,"content":"Describe the function of the register labelled Component K.","markscheme":"- Identifies Component K as the Memory Data Register (MDR) or Memory Buffer Register (MBR) B1\n- Explains that it temporarily stores the instruction or data that has been fetched from main memory, or data that is waiting to be written to main memory B1","marks":2,"order":0,"markingRubric":null,"explanation":null,"options":[]}],"options":[],"explanation":null,"firstAttemptFullMarks":null}],"subjectCode":"gcse_computer_science","summaries":[{"id":"0134bd05-2f75-4e2b-9e6b-0186e46d8c19","difficultyBand":"easy","calculatorUse":null},{"id":"069e3150-0c3f-46ae-9cd9-9f0a2dc913fc","difficultyBand":"easy","calculatorUse":null},{"id":"0708efb2-1685-431c-a3e1-e27fc0e78b69","difficultyBand":"easy","calculatorUse":null},{"id":"08223b2e-dc24-4792-8b8e-1c88f1d5ec49","difficultyBand":"easy","calculatorUse":null},{"id":"0a8f7e86-784f-495f-80bf-cbe039af3078","difficultyBand":"easy","calculatorUse":null},{"id":"13e783fd-a40c-46f0-8b6e-3cc17de6004b","difficultyBand":"medium","calculatorUse":null},{"id":"14d6b53a-8a32-4c28-b8d5-c0e064456c68","difficultyBand":"easy","calculatorUse":null},{"id":"1608a0c7-fe41-4a46-8b93-4638be25b196","difficultyBand":"easy","calculatorUse":null},{"id":"1827f249-1cb9-46d7-b0db-f8919830271d","difficultyBand":"easy","calculatorUse":null},{"id":"1b637010-aafb-4eb6-9dcd-5b04edb01fee","difficultyBand":"easy","calculatorUse":null},{"id":"1cb96b12-4b9e-4f24-a060-3da525e7d521","difficultyBand":"easy","calculatorUse":null},{"id":"1d314c60-42df-4

Hardware

Question 31

Hardware Questions

Hardware

Question 31

Hardware Questions