Year 8 CCEA Computer Science: Key Terms & Vocabulary Quick Guide | CCEA 8年级计算机：关键术语速记指南

📚 Year 8 CCEA Computer Science: Key Terms & Vocabulary Quick Guide | CCEA 8年级计算机：关键术语速记指南

Welcome to your quick-reference guide for the most important terms in Year 8 CCEA Computer Science. Understanding these words will help you talk like a computer scientist, solve problems logically, and stay safe online. Keep this list handy as you revise – you can turn each definition into a flash card or teach it to a friend.

欢迎使用CCEA 8年级计算机科学最重要术语的速查指南。理解这些词汇能帮助你像计算机科学家一样交谈、有逻辑地解决问题并安全上网。复习时请将此清单放在手边——你可以把每个定义做成闪卡，或者讲给朋友听。

1. What is Computer Science? | 什么是计算机科学？

Computer Science is the study of computers, how they process information, and how we can use technology to solve real-world problems. It blends logical thinking, creativity, and systematic design.

计算机科学研究计算机及其处理信息的方式，以及我们如何利用技术解决现实问题。它融合了逻辑思维、创造力和系统化设计。

A computer system takes input, processes it, and produces output. This simple model – called the IPO model – is at the heart of everything from a smartphone to a supercomputer.

计算机系统接收输入、处理数据并产生输出。这个简单的模型——称为IPO模型——是从智能手机到超级计算机一切的核心。

Key terms you will hear often include ‘algorithm’, ‘program’, ‘data’, ‘hardware’ and ‘software’. Mastering them early gives you a huge advantage.

你将经常听到的关键术语包括“算法”、“程序”、“数据”、“硬件”和“软件”。尽早掌握它们会带来巨大优势。

The subject is not just about coding; it also covers digital safety, how networks work, and how to organise information effectively.

这门学科不仅仅是编程，还涵盖数字安全、网络如何运作以及如何有效组织信息。

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2. Computational Thinking | 计算思维

Computational thinking is a set of problem-solving methods used by computer scientists. It equips you with skills to break down challenges and design solutions that a machine can carry out.

计算思维是计算机科学家使用的一套问题解决方法。它让你具备拆解挑战并设计机器可执行方案的能力。

There are four cornerstones: decomposition, pattern recognition, abstraction, and algorithm design. They work together like tools in a toolbox.

四大基石是：分解、模式识别、抽象和算法设计。它们像工具箱里的工具一样协同工作。

Decomposition means splitting a complex task into smaller, manageable parts. If you are planning a school play, you might decompose it into script, costumes, lighting, and rehearsals.

分解指将复杂任务拆分成更小、可管理的部分。若你在策划校园剧，可以将其分解为剧本、服装、灯光和排练。

Pattern recognition is about spotting similarities between different problems. Once you notice a pattern, you can recycle a previous solution – saving time and effort.

模式识别是指发现不同问题间的相似性。一旦注意到模式，你就能复用已有的解决方案——省时又省力。

Abstraction involves focusing only on the important details while ignoring irrelevant information. A tube map is an abstraction: it shows stations and connections but leaves out streets and buildings.

抽象意味着只关注重要细节，忽略无关信息。地铁线路图就是抽象：它显示了车站和连接，但省略了街道和建筑。

An algorithm is a precise, step-by-step plan to complete a task – just like a recipe. It must be in the correct order and clear enough that anyone (or any computer) can follow it.

算法是完成任务的精确、分步计划——就像一份食谱。它必须顺序正确、清晰明了，让任何人（或计算机）都能遵循。

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3. Hardware and Software | 硬件与软件

Hardware is any physical part of a computer that you can touch. This includes external devices like the keyboard and mouse, as well as internal components such as the CPU, RAM, and hard drive.

硬件指计算机中你能触摸到的所有物理部件。包括键盘、鼠标等外部设备，以及CPU、内存、硬盘等内部组件。

The CPU (Central Processing Unit) is often called the ‘brain’ of the computer. It fetches instructions from memory, decodes them, and then executes them at incredible speed.

CPU（中央处理器）常被称为计算机的“大脑”。它从内存中提取指令、解码，然后以惊人速度执行。

RAM (Random Access Memory) is temporary, fast storage that holds the data and programs currently in use. When you turn the computer off, anything in RAM disappears.

RAM（随机存取存储器）是临时高速存储，保存正在使用的数据和程序。计算机关机后，RAM中的内容随之消失。

Software is the collection of digital instructions that tells hardware what to do. Operating systems (e.g., Windows, macOS), web browsers, and games are all examples of software.

软件是指示硬件做什么的数字指令集合。操作系统（如Windows、macOS）、网络浏览器和游戏都属于软件。

There are two main types: system software (which runs the computer itself) and application software (which helps you perform tasks like writing, drawing, or programming).

软件主要有两类：系统软件（运行计算机本身）和应用软件（帮助你完成写作、绘图或编程等任务）。

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4. Input, Output, and Storage | 输入、输出与存储

An input device sends data into the computer so it can be processed. Everyday examples are keyboards, mice, touchscreens, microphones, and game controllers.

输入设备将数据送入计算机以便处理。日常例子有键盘、鼠标、触摸屏、麦克风和游戏手柄。

An output device displays or communicates the results after processing. Monitors, printers, speakers, and headphones all fall into this category.

输出设备在处理后显示或传达结果。显示器、打印机、扬声器和耳机都属于这一类。

Storage devices keep data and programs safe for later use. Hard disk drives (HDD), solid-state drives (SSD), USB flash drives, and cloud storage services save your files even when the power is off.

存储设备保存数据与程序以备

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