📚 Winter Break Intensive Revision Plan for Cambridge Year 10 Computer Science | 剑桥Year 10计算机寒假强化复习计划
The winter break offers Year 10 students following the Cambridge IGCSE Computer Science syllabus (0478) a golden opportunity to consolidate first-term knowledge and build a strong foundation for the second half of the course. This intensive plan breaks down key topics into manageable daily sessions, balancing theory, programming practice, and past-paper skills.
寒假为学习剑桥IGCSE计算机科学课程（0478）的Year 10学生提供了一个宝贵的机会，可以巩固上学期的知识，并为下半程的课程打下坚实基础。本强化复习计划将关键主题分解为可管理的每日任务，兼顾理论学习、编程练习和真题技巧训练。
1. Setting Your Revision Goals | 设定复习目标
Identify your weaker areas by reviewing past assessments or quizzes. Use the syllabus checklist to mark topics as 'confident', 'needs review', or 'not yet covered'.
通过回顾过往评估或测验，找出自己的薄弱环节。使用大纲清单将主题标记为 '自信'、'需复习' 或 '尚未学习'。
Set SMART goals—Specific, Measurable, Achievable, Relevant, Time-bound. For example, 'I will complete 3 binary conversion exercises daily and score full marks in a 10-minute timed quiz by the end of week one.'
设定SMART目标——具体、可衡量、可实现、相关、有时限。例如，'到第一周结束时，我每天将完成3道二进制转换练习，并在10分钟限时测验中取得满分。'
2. Understanding the Syllabus | 理解考试大纲
The Cambridge IGCSE Computer Science syllabus is divided into two papers: Paper 1 (Computer Systems) accounts for 50% and covers theory; Paper 2 (Algorithms, Programming and Logic) accounts for 50% and emphasises problem-solving and programming. Knowing the weight of each topic helps prioritise revision.
剑桥IGCSE计算机科学大纲分为两份试卷：试卷一（计算机系统）占50%，涵盖理论知识；试卷二（算法、编程与逻辑）占50%，强调问题解决与编程能力。了解各主题的权重有助于安排复习的优先顺序。
Print a copy of the syllabus and highlight the content expected for Year 10. Typically, data representation, hardware, software, basic algorithms, and programming constructs are covered in the first year.
打印一份大纲，并勾画出Year 10要求的内容。通常，第一年涵盖数据表示、硬件、软件、基本算法和编程结构。
3. Data Representation | 数据表示
Master binary, denary, and hexadecimal conversions. Remember: binary is base-2 (digits 0 and 1), denary is base-10, and hexadecimal is base-16 (using 0–9 and A–F). Converting between them is a core skill tested in both papers.
掌握二进制、十进制和十六进制转换。记住：二进制是基数为2（用0和1），十进制是基数为10，十六进制是基数为16（使用0-9和A-F）。它们之间的转换是两份试卷都测试的核心技能。
le, an image with a resolution of 1080×720 and a colour depth of 24 bits has a file size approximately equal to 1080 × 720 × 24 ÷ 8 bytes.
理解计算机如何表示字符（ASCII、Unicode）、图像（像素、颜色深度）和声音（采样率、位深度）。例如，分辨率为1080×720、颜色深度为24位的图像，文件大小大约等于1080 × 720 × 24 ÷ 8字节。
Practise binary addition and binary shifts. Recall that a left shift by n places multiplies the number by 2ⁿ, while a right shift divides.
练习二进制加法和二进制移位。记住，左移n位相当于数值乘以2ⁿ，右移相当于除以2ⁿ。
4. Hardware & Architecture | 硬件与体系结构
The von Neumann architecture describes how a computer stores both data and instructions in the same memory. Key components include the Central Processing Unit (CPU), memory, input/output devices, and buses (address, data, control).
冯·诺依曼体系结构描述了计算机如何将数据和指令存储在同一内存中。关键组件包括中央处理器（CPU）、内存、输入输出设备以及总线（地址总线、数据总线、控制总线）。
Within the CPU, understand the roles of the control unit (CU), arithmetic logic unit (ALU), and registers such as the program counter (PC), memory address register (MAR), and memory data register (MDR). The fetch-decode-execute cycle is fundamental.
在CPU内部，理解控制单元（CU）、算术逻辑单元（ALU）以及寄存器的作用，例如程序计数器（PC）、内存地址寄存器（MAR）和内存数据寄存器（MDR）。取指-解码-执行循环是基本概念。
Be able to compare embedded systems with general-purpose computers. Embedded systems are designed for a specific task, have limited resources, and are found in devices like washing machines and traffic lights.
能够比较嵌入式系统与通用计算机。嵌入式系统专为特定任务设计，资源有限，常见于洗衣机、交通灯等设备中。
5. Software & Operating Systems | 软件与操作系统
Distinguish between application software (e.g., word processor, spreadsheet) and system software (e.g., operating system, utility programs). The OS manages hardware, provides a user interface, and handles multitasking and file management.
区分应用软件（如文字处理器、电子表格）和系统软件（如操作系统、实用程序）。操作系统管理硬件、提供用户界面，并处理多任务和文件管理。
Learn how interrupts enable the CPU to respond to events. An interrupt sends a signal to the processor, which suspends its current task, saves its state, runs an interrupt service routine, and then resumes.
了解中断如何使CPU响应事件。中断向处理器发送信号，处理器挂起当前任务、保存状态、运行中断服务程序，然后恢复执行。
Be familiar with utility software such as defragmentation, backup, compression, and antivirus tools. Their functions help maintain system performance and security.
熟悉实用程序软件，如碎片整理、备份、压缩和防病毒工具。它们的功能有助于维护系统性能和安全。
6. Algorithms & Programming Fundamentals | 算法与编程基础
An algorithm is a step-by-step solution to a problem. Use flowcharts and pseudocode to design algorithms before coding. Sequence, selection (IF...THEN...ELSE), and iteration (FOR, WHILE) are the building blocks.
算法是解决问题的分步骤方案。在编码前，可用流程图和伪代码设计算法。顺序、选择（IF...THEN...ELSE）和循环（FOR、WHILE）是基本构建模块。
Trace tables are essential for debugging. Practise completing them to track variable values through each step of an algorithm.
跟踪表对调试至关重要。通过练习填写跟踪表，追踪算法每一步的变量值。
Understand searching and sorting algorithms: linear search, binary search, bubble sort, and insertion sort. You should be able to write pseudocode for each and compare their efficiency.
理解搜索与排序算法：线性搜索、二分搜索、冒泡排序和插入排序。应能为每种算法编写伪代码并比较其效率。
7. Programming with Pseudocode & Python | 伪代码与Python编程
Cambridge uses a specific pseudocode style in exams. Revise its syntax for variable declaration, input/output, selection, and loops. For example: INPUT x; WHILE x < 10 DO x ← x + 1; OUTPUT x; ENDWHILE.
剑桥在考试中使用特定的伪代码风格。复习其变量声明、输入/输出、选择和循环的语法。例如：INPUT x; WHILE x < 10 DO x ← x + 1; OUTPUT x; ENDWHILE。
Practise coding in Python to reinforce concepts. Write scripts that use arrays, functions, and string manipulation. For instance, iterate through a list to find the maximum value, or write a function to reverse a string.
通过Python编码练习巩固概念。编写使用数组、函数和字符串处理的脚本。例如，遍历列表以找出最大值，或编写一个函数来反转字符串。
Pay attention to data types (integer, real, char, string, Boolean) and common operators (arithmetic, comparison, logical AND/OR/NOT). This is tested in both theory and practical problem-solving.
注意数据类型（整型、实型、字符型、字符串型、布尔型）和常用运算符（算术、比较、逻辑AND/OR/NOT）。这在理论和实际问题解决中都会考查。
8. Databases & SQL | 数据库与SQL
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