Cambridge AssessmentInternational EducationSyllabusComputer Science 0478Use this syllabus for exams in 2023,2024 and 2025.Exams are available in the June and November series.Exams are also available in the March series in India only.CambridgeVersion 2PathwayWhy choose Cambridge International?Cambridge International prepares school students for life,helping them develop an informed curiosity and a lastingpassion for learning.We are part of the University of Cambridge.Our Cambridge Pathway gives students a clear path for educational success from age 5 to 19.Schools can shapethe curriculum around how they want students to learn-with a wide range of subjects and flexible ways to offerthem.It helps students discover new abilities and a wider world,and gives them the skills they need for life,so theycan achieve at school,university and work.Our programmes and qualifications set the global standard for international education.They are created by subjectexperts,rooted in academic rigour and reflect the latest educational research.They provide a strong platform forlearners to progress from one stage to the next,and are well supported by teaching and learning resources.Our mission is to provide educational benefit through provision of international programmes and qualifications forschool education and to be the world leader in this field.Together with schools,we develop Cambridge leamnerswho are confident,responsible,reflective,innovative and engaged-equipped for success in the modern world.Every year,nearly a million Cambridge students from 10000 schools in 160 countries prepare for their future withthe Cambridge Pathway.'We think the Cambridge curriculum is superb preparation for university.'Christoph Guttentag,Dean of Undergraduate Admissions,Duke University,USAQuality managementCambridge International is committed to providing exceptional quality.In line with this commitment,ourquality management system for the provision of international qualifications and education programmesfor students aged 5 to 19 is independently certified as meeting the internationally recognised standard,ISO 9001:2015.Learn more at www.cambridgeinternational.org/ISO9001Cambridge Assessment International Educat ion is part of the Cambridge Assessment Group.Cambridge Assessment is the brand name ofthe University of Cambridge Local Examinations Syndicate (UCLES),which itself is a department of the University of Cambridge.UCLES retains the copyright on all its publications.Registered centres are pemmitted to copy material from this booklet for their owninternal use.However,we cannot give permission to centres to photocopy any material that is acknowledged to a third party even forinternal use within a centre.Contents2 Syllabus overview .................Aims5Content overview6Assessment overviewAssessment objectives83 Subject content9Computer systems9Algorithms,programming and logic234 Details of the assessment ................30Paper 1-Computer Systems30Paper 2-Algorithms,Programming and Logic30Mathematical requirements31Flowchart symbols31Logic gate symbols32Pseudocode33Command words475 What else you need to know ........48Before you start48Making entries49After the exam50How students and teachers can use the grades50Grade descriptions50Changes to this syllabus for 2023,2024 and 202551Important:Changes to this syllabusFor information about changes to this syllabus for 2023,2024 and 2025,go to page 51.