[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-detail-207550-en":3,"doc-seo-207550-105":30,"detail-sidebar-cat-0-en-105":90},{"code":4,"msg":5,"data":6},0,"success",{"doc_id":7,"user_id":8,"nickname":9,"user_avatar":10,"doc_module":4,"category_id":11,"category_name":12,"doc_title":13,"doc_description":14,"doc_content":15,"file_id":16,"file_url":17,"file_type":18,"file_size":19,"view_count":4,"is_deleted":4,"is_public":20,"is_downloadable":20,"audit_status":20,"page_count":21,"language":22,"language_code":23,"site_id":24,"html_lang":23,"table_of_contents":25,"faqs":26,"seo_title":27,"seo_description":14,"update_tm":28,"read_time":29},207550,1099523885336,"Taylor Morgan","https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c",4,"Exam","GCSE Computer Science (9-1) - Systems Architecture - Topic Test","Topic Test: Systems Architecture for GCSE Computer Science (9-1) focuses on core exam-style questions about how CPUs operate and how they are organized in different architectures. Learners describe the roles of the control unit, arithmetic/logic unit, cache, and factors that affect CPU performance. The test also assesses understanding of Von Neumann architecture registers (MAR, MDR, program counter, accumulator) and embedded systems, including examples and the purpose of key hardware components.","GCSE Computer Science (9-1)  \nSystems Architecture  \nTopic Tests  \nPhotocopiable Resources  \nTerms and Conditions of Use  \nYour school has permission to copy this resource as many times as you require and to use it as you wish within your school/organisation.  \nYou do not have permission to distribute it as a paper or electronic document to other schools or organisations.  \nAny questions? Email: [edulitolearn@gmail.com](edulitolearn@gmail.com)  \n© 2016 Edulito and its licensors. All rights reserved.  \nTopic Test-Systems Architecture  \n1. Below is a diagram to show some of the features of a CPU. A CPU can be found inside computer devices.  \n(a) Describe the role played by the CPU in a computer device [2]  \n………………………………………………………………………………………………………………………………………………  \n\n| . |\n| --- |\n| What is the role played by each of the following components within the CPU?\u003Cbr>(b) Control Unit [1] |\n\n\n| . |\n| --- |\n| (c) Arithmetic Unit [2] |\n\n………………………………………………………………………………………………………………………………………………  \n……………………………………………………………………………………………………………………………………………….  \n……………………………………………………………………………………………………………………………………………….  \n(d) Cache [2]  \n………………………………………………………………………………………………………………………………………………  \n……………………………………………………………………………………………………………………………………………….  \n(e) Some CPUs perform better than other CPUs. Apart from the amount of cache in a CPU, list two other factors that influence the performance of a CPU and for each explain how the characteristic listed can improve performance. [4]  \nFactor 1   Explanation  \n………………………………………………………………………………………………………………………………………………  \n……………………………………………………………………………………………………………………………………………….  \nFactor 2   Explanation  \n………………………………………………………………………………………………………………………………………………  \n……………………………………………………………………………………………………………………………………………….  \n2. The diagram below shows a pictorial representation of Von Neumann architecture.  \nIn relation Von Neumann architecture what is the role played by the:  \n(a) The Memory Address Register (MAR)? [2]  \n………………………………………………………………………………………………………………………………………………  \n………………………………………………………………………………………………………………………………………………  \n(b) The Memory Data Register (MDR)? [2]  \n\n| . |\n| --- |\n| (c) The Program Counter (PC)? [3] |\n\n\n| . |\n| --- |\n|  |\n\n(d) The Accumulator?[2]  \n………………………………………………………………………………………………………………………………………………  \n……………………………………………………………………………………………………………………………………………….  \n3. Many devices that we find around us, both at home and in the wider world, can be described as embedded systems.  \n(a) Give an example of an embedded system. [1]  \n(b) Explain the purpose of this embedded system, including a description of three hardware components that are part of the embedded system. [3]  \n………………………………………………………………………………………………………………………………………………  \n………………………………………………………………………………………………………………………………………………  \n(c) Give another example of an embedded system. [1]  \n(d) Explain the purpose of this embedded system, including a description of three components that are part of the embedded system. [3]  \n………………………………………………………………………………………………………………………………………………  \n………………………………………………………………………………………………………………………………………………  \n\n| Topic Test-Systems Architecture-Mark Scheme |  |  |  |\n| --- | --- | --- | --- |\n| Question Number | Answer | Additional Guidance | Mark |\n| 1 a | It is the “brain” of the computer [1 mark] It interprets/executes/processes program instructions.[1 mark] |  | 2 |\n| 1 b | The control unit directs the operation of the processor. [1 mark] | It tells the computer's memory, arithmetic/logic unit and input and output deviceshow to respond to a program's instructions. | 1 |\n| 1 c | It is used to perform arithmetic [1 mark] and logic operations [1 mark] within the CPU. |  | 2 |\n| 1 d | A cache used by the CPU to reduce the average time to access data from the main memory. [1 mark] Therefore allowing the CPU to process data more quickly. [1 mark] | The cache is a smaller, faster memory which stores copies of the data from frequently used main memory locations. | 2 |\n| 1 e | Factor: Clock speed. [1 mark]\u003Cbr>The more instructions that are p","cbCaipQSmORVhTdK","https://ap.wps.com/l/cbCaipQSmORVhTdK","pdf",1301446,1,8,"English","en",105,"# Topic Test-Systems Architecture\n## CPU features and performance\n## Von Neumann architecture registers\n## Embedded systems examples and components","[{\"question\":\"What is the role of the CPU in a computer device?\",\"answer\":\"The CPU interprets and executes program instructions. It directs the overall operation of the processor by coordinating memory, arithmetic/logic processing, and input/output device responses.\"},{\"question\":\"What do the registers in Von Neumann architecture do (MAR, MDR, PC, accumulator)?\",\"answer\":\"The MAR stores the memory address to fetch from or send to. The MDR holds the data to store or the data after a fetch. The PC stores the address of the current instruction and moves to the next one after each fetch. The accumulator stores arithmetic and logic results.\"},{\"question\":\"What is an embedded system and what should an answer include?\",\"answer\":\"An embedded system is a specialized computer system found in devices around us. A good response gives an example and explains its purpose, including three hardware components that form part of the embedded system.\"}]","GCSE Computer Science (9-1) - Systems Architecture - Topic Test | PDF",1788599971,20,{"code":4,"msg":31,"data":32},"ok",{"site_id":24,"language":23,"slug":33,"title":13,"keywords":34,"description":14,"schema_data":35,"social_meta":85,"head_meta":87,"extra_data":89,"updated_unix":28},"gcse-computer-science-9-1-systems-architecture-topic-test","",{"@graph":36,"@context":84},[37,53,67],{"@type":38,"itemListElement":39},"BreadcrumbList",[40,44,48,51],{"item":41,"name":42,"@type":43,"position":20},"https://docshare.wps.com","Home","ListItem",{"item":45,"name":46,"@type":43,"position":47},"https://docshare.wps.com/document/","Document",2,{"item":49,"name":12,"@type":43,"position":50},"https://docshare.wps.com/document/exam/",3,{"item":52,"name":13,"@type":43,"position":11},"https://docshare.wps.com/document/gcse-computer-science-9-1-systems-architecture-topic-test/207550/",{"url":52,"name":13,"@type":54,"author":55,"headline":13,"publisher":57,"fileFormat":60,"inLanguage":23,"description":14,"dateModified":61,"datePublished":61,"encodingFormat":60,"isAccessibleForFree":62,"interactionStatistic":63},"DigitalDocument",{"name":9,"@type":56},"Person",{"url":41,"name":58,"@type":59},"DocShare","Organization","application/pdf","2026-09-05",true,{"@type":64,"interactionType":65,"userInteractionCount":4},"InteractionCounter",{"@type":66},"ViewAction",{"@type":68,"mainEntity":69},"FAQPage",[70,76,80],{"name":71,"@type":72,"acceptedAnswer":73},"What is the role of the CPU in a computer device?","Question",{"text":74,"@type":75},"The CPU interprets and executes program instructions. It directs the overall operation of the processor by coordinating memory, arithmetic/logic processing, and input/output device responses.","Answer",{"name":77,"@type":72,"acceptedAnswer":78},"What do the registers in Von Neumann architecture do (MAR, MDR, PC, accumulator)?",{"text":79,"@type":75},"The MAR stores the memory address to fetch from or send to. The MDR holds the data to store or the data after a fetch. The PC stores the address of the current instruction and moves to the next one after each fetch. The accumulator stores arithmetic and logic results.",{"name":81,"@type":72,"acceptedAnswer":82},"What is an embedded system and what should an answer include?",{"text":83,"@type":75},"An embedded system is a specialized computer system found in devices around us. 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