📚 Year 7 Edexcel Computer Science: Summer Preparation & Bridging Course | Year 7 Edexcel 计算机：暑期预习与衔接课程
Welcome to your Year 7 Edexcel Computer Science journey! This summer preparation and bridging course will help you enter the new academic year with confidence. Computer Science is not just about using computers; it is about understanding how they work, solving problems logically, and creating your own digital solutions. By exploring core ideas now, you will find your lessons more engaging and manageable.
欢迎开启 Year 7 Edexcel 计算机科学的学习之旅！这个暑期预习与衔接课程将帮助你自信地迎接新学年。计算机科学不仅仅是使用电脑，更是理解它们的工作原理、逻辑地解决问题以及创造你自己的数字方案。现在探索核心概念，你会发现课堂内容更吸引人，也更容易掌握。
1. What is Computer Science? | 什么是计算机科学？
Computer Science is the study of computers and computational systems. It covers how data is stored and processed, how programs are written, and how computers solve problems using logical thinking. Unlike Information and Communication Technology (ICT), which focuses on using software, Computer Science teaches you to be a creator of technology.
计算机科学是研究计算机和计算系统的学科。它涵盖数据如何存储和处理、程序如何编写，以及计算机如何运用逻辑思维解决问题。与侧重使用软件的信息与通信技术 (ICT) 不同，计算机科学教你成为技术的创造者。
In Year 7, you will begin to explore what is ‘under the hood’ of your devices. You will learn about algorithms, which are step-by-step sets of instructions, and develop computational thinking skills that help in all subjects.
在 Year 7，你将开始探索设备“内部”的奥秘。你将学习算法，即一步步的指令集，并培养应用于所有学科的计算思维技能。
2. The Big Picture of the Year 7 Curriculum | Year 7 课程全景
The Edexcel Year 7 Computer Science curriculum is designed to give you a strong foundation. Topics typically include computer hardware and software, data representation (especially binary), introduction to programming using visual tools like Scratch, basic algorithms and flowcharts, e-safety, and the principles of computational thinking.
Edexcel Year 7 计算机科学课程旨在为你打下坚实基础。主题通常包括计算机硬件与软件、数据表示（特别是二进制）、使用 Scratch 等可视化工具进行编程入门、基本算法与流程图、网络安全，以及计算思维的原则。
You will not need any previous coding experience. The course begins with the very basics, so this summer prep will simply give you a head start. Many schools also integrate topics on networks and how the internet works.
你不需要任何编程经验。课程从最基础开始，因此这个暑期预习只是让你先人一步。很多学校还会融入网络和互联网工作原理等主题。
3. Inside the Machine: Hardware Basics | 机器内部：硬件基础
Hardware refers to the physical components of a computer that you can touch. The most important part is the Central Processing Unit (CPU), often called the ‘brain’ of the computer. It performs calculations and controls the flow of data.
硬件指计算机中你能触摸到的物理部件。最重要的部分是中央处理器 (CPU)，常被称为计算机的“大脑”。它执行计算并控制数据流。
Memory comes in two main types: RAM (Random Access Memory) and storage (like hard drives or SSDs). RAM holds data and programs that the CPU is currently using; it is fast but temporary. Storage keeps your files permanently, even when the power is off.
内存主要有两种：RAM（随机存取存储器）和存储（如硬盘或 SSD）。RAM 保存 CPU 当前使用的数据和程序，速度很快但属于临时存储。存储则永久保留文件，即使断电也不会丢失。
Other essential hardware includes the motherboard (the main circuit board connecting everything), power supply, and cooling fans. Understanding these parts helps you appreciate how a computer really works.
其他基本硬件包括主板（连接一切的主电路板）、电源和冷却风扇。了解这些部件有助于你领会计算机的实际运作。
4. Software: The Invisible Instructions | 软件：无形的指令
Software is the set of instructions that tells the hardware what to do. It is divided into system software and application software. System software includes the operating system (OS) like Windows, macOS, or Linux, which manages hardware resources and provides a user interface.
软件是指示硬件做什么的指令集。它分为系统软件和应用软件。系统软件包括操作系统 (OS)，如 Windows、macOS 或 Linux，负责管理硬件资源并提供用户界面。
Application software includes programs that help users perform specific tasks, such as word processors, web browsers, and games. When you write your own programs in Scratch, you are creating your own application software.
应用软件包括帮助用户执行特定任务的程序，如文字处理器、网页浏览器和游戏。当你在 Scratch 中编写自己的程序时，你就在创建自己的应用软件。
5. Input and Output: Communicating with Computers | 输入
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