KS3 Cambridge Computing: Quick Vocabulary Memorisation Guide | KS3 Cambridge 计算机：词汇术语速记指南

📚 KS3 Cambridge Computing: Quick Vocabulary Memorisation Guide | KS3 Cambridge 计算机：词汇术语速记指南

Mastering computing vocabulary is the first step to understanding how computers and networks work. This guide provides clear definitions and clever memory tips for essential KS3 Cambridge Computing terms, helping you recall them quickly in class and exams.

掌握计算机词汇是理解计算机与网络工作原理的第一步。本指南为 KS3 Cambridge 计算机课程中的关键术语提供了清晰的定义和巧妙的记忆技巧，帮助你在课堂和考试中快速回忆。

1. Hardware & Peripherals | 硬件与外围设备

Hardware refers to the physical components of a computer you can touch. Peripherals are external devices that connect to the computer to provide input, output, or storage. Remembering these terms helps you describe what makes a computer system work.

硬件指计算机中可以触摸的物理部件。外围设备是连接计算机以提供输入、输出或存储的外部设备。记住这些术语有助于你描述计算机系统的组成。

CPU (Central Processing Unit): The ‘brain’ of the computer that carries out instructions. Think of it as a chef following a recipe: it fetches, decodes and executes one instruction after another.

CPU（中央处理器）：计算机的’大脑’，负责执行指令。想象成一位遵循食谱的厨师：它不停地取指令、解码并执行。

RAM (Random Access Memory): Temporary storage that holds data and programs the CPU is currently using. RAM is volatile, meaning it loses everything when power is turned off. Remember ‘Random Access’ as being able to grab any piece of data directly, like jumping to any page in a book instantly.

RAM（随机存取存储器）：临时存储 CPU 正在使用的数据和程序。RAM 是易失性的，意味着断电后所有数据都会丢失。记住’随机存取’就像可以无需顺序直接翻到书中的任意一页。

ROM (Read Only Memory): Permanent memory built into the computer that stores the startup instructions (BIOS). It is non-volatile and cannot be changed easily. Think of it as a printed instruction booklet that comes with a board game.

ROM（只读存储器）：内置在计算机中的永久存储器，存储启动指令 (BIOS)。它是非易失性的，不可轻易更改。想象成随棋盘游戏附送的印刷说明书。

Storage Drive (HDD/SSD): The long-term memory of a computer. HDDs use spinning metal platters, while SSDs use flash memory (no moving parts) and are much faster. Think of a filing cabinet (HDD) versus a super-fast magic drawer (SSD).

存储驱动器 (HDD/SSD)：计算机的长期存储器。HDD（机械硬盘）使用旋转的金属盘片，而 SSD（固态硬盘）使用闪存（无移动部件），速度更快。将 HDD 想象成文件柜，SSD 想象成超快的神奇抽屉。

Motherboard: The main circuit board that connects all components together, like a skeleton providing pathways for communication. All parts plug into it.

主板：将所有组件连接在一起的主电路板，就像为通信提供通路的骨架。所有部件都插在上面。

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2. Software Types | 软件类型

Software is the set of instructions that tells the hardware what to do. It can be split into system software that runs the computer and application software that helps the user perform tasks. Understanding these categories aids your computing literacy.

软件是指告诉硬件要做什么的指令集。它可以分为运行计算机的系统软件和帮助用户完成任务的应用程序软件。理解这些分类有助于提升你的计算机素养。

Operating System (OS): The master controller software that manages hardware, runs applications, and provides a user interface. Examples are Windows, macOS, Linux. Think of the OS as the stage manager in a theatre: without it, no actor can perform.

操作系统 (OS)：管理硬件、运行应用程序并提供用户界面的总控软件。例如 Windows、macOS、Linux。将操作系统想象成剧院的舞台监督：没有它，演员就无法表演。

Application Software: Programs that let users do specific tasks, such as word processing (Word), spreadsheets (Excel), or graphic editing (Photoshop). They sit on top of the operating system.

应用程序软件：让用户完成特定任务的程序，如文字处理 (Word)、电子表格 (Excel) 或图像编辑 (Photoshop)。它们运行在操作系统之上。

Utility Software: Small programs that maintain and protect the computer, like antivirus, backup tools, and disk cleaners. Think of them as the cleaning and security crew backstage.

实用程序软件：养护和保护计算机的小型程序，如杀毒软件、备份工具和磁盘清理器。想象成后台的清洁和安全人员。

Firmware: A special type of software stored on ROM that provides low-level control for the device’s specific hardware. It’s not meant to be changed frequently by the user. Think of it as the built-in personality of a gadget.

固件：存储在 ROM 上的一种特殊软件，为设备特定硬件提供低级控制。用户不应经常修改它。想象成设备内置的’性格’。

GUI (Graphical User Interface): A visual way of interacting with software using windows, icons, menus, and a pointer (WIMP). It allows users to click instead of typing commands.

GUI（图形用户界面）：使用窗口、图标、菜单和指针 (WIMP) 与软件交互的可视化方式。它让用户可以通过点击来操作，而不是输入命令。

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3. Data Representation & Binary | 数据表示与二进制

Computers use binary (1s and 0s) to represent all types of data. Learning the building blocks of digital data—bits, bytes, and number systems—helps you understand how text, images, and sound are stored.

计算机使用二进制（1和0）表示所有类型的数据。学习数字数据的基本构成（位、字节、数制）有助于你理解文本、图像和声音是如何存储的。

Bit: The smallest unit of data in a computer, representing a 1 or a 0 (on or off). Think of it as a single light switch.

位 (Bit)：计算机中最小的数据单位，代表 1 或 0（开或关）。想象成单个电灯开关。

Byte: A group of 8 bits. A single character like ‘A’ is typically stored in one byte. Remember: 8 switches make one byte—enough to store one letter.

字节 (Byte)：一组 8 个位。像 ‘A’ 这样单个字符通常存储在一个字节中。记住：8 个开关组成一个字节，刚好存一个字母。

Nibble: Half a byte, or 4 bits. It’s useful because a single hexadecimal digit corresponds to one nibble. Visualise a nibble as a small bite (like nibbling a biscuit).

半字节 (Nibble)：半个字节，即 4 位。它很有用，因为一位十六进制数字恰好对应一个半字节。形象化想象成小口咬饼干 (nibble)。

Binary (Base 2): A number system using only 0 and 1. Place values are powers of 2: 1, 2, 4, 8, 16, 32, … Learn it as stacking blocks each doubling in size.

二进制（基数为2）：仅使用 0 和 1 的数字系统。位值是 2 的幂：1, 2, 4, 8, 16, 32……可以学习为’加倍堆叠的积木’。

Denary (Base 10): Our everyday number system with ten digits (0–9). Converting between binary and denary is a core KS3 skill.

十进制（基数为10）：我们日常使用的具有十个数字 (0–9) 的数字系统。二进制与十进制之间的转换是 KS3 的核心技能。

Hexadecimal (Base 16): A number system using digits 0–9 and letters A–F. It is a compact way to write binary; two hex digits represent one byte. Memory tip: ‘Hex’ sounds like six and ten (6+10=16).

十六进制（基数为16）：使用数字 0–9 和字母 A–F 的数字系统。它是书写二进制的简洁方式；两位十六进制数表示一个字节。记忆技巧：’Hex’ 听上去像 six 和 ten (6+10=16)。

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4. Networking Hardware & Concepts | 网络硬件与概念

A computer network connects devices to share resources and data. Key hardware components enable communication locally and across the world. These terms form the vocabulary of how data travels.

计算机网络连接设备以共享资源和数据。关键的硬件组件实现本地和全球的通信。这些术语构成了数据如何传输的词汇。

Router: A device that forwards data packets between different networks, such as from your home network to the internet. Picture it as a postal sorting office deciding which route a letter takes.

路由器：在不同网络之间转发数据包的设备，例如从家庭网络到互联网。想象成决定信件路线的邮政分拣处。

Switch: Connects devices within the same network (e.g., in a school IT lab) and directs data to the specific device using MAC addresses. Think of a smart traffic officer directing cars exactly to their parking spot.

交换机：连接同一网络内的设备（如学校 IT 实验室），并使用 MAC 地址将数据定向到特定设备。想象成能精准指挥汽车停入对应车位的智能交通员。

Modem: Short for Modulator-Demodulator. It converts digital signals from a computer into analogue signals for telephone lines/cable and back. Memory: MOD-ulate and DEM-odulate.

调制解调器：Modulator-Demodulator 的缩写。它将计算机的数字信号转换为适合电话线/电缆传输的模拟信号，并反向转换。记忆：调制和解调。

NIC (Network Interface Card): The hardware that connects a computer to a network, either wired (Ethernet) or wireless (Wi-Fi). Every NIC has a unique MAC address. Think of it as the computer’s name badge.

NIC（网络接口卡）：将计算机连接到网络的硬件，可以是有线（以太网）或无线（Wi-Fi）。每个 NIC 都有唯一的 MAC 地址。想象成计算机的’胸牌’。

LAN vs WAN: A Local Area Network covers a small geographical area like a school (LAN = Local Area). A Wide Area Network connects LANs over large distances, such as the internet (WAN = World-spanning).

LAN 与 WAN：局域网 (LAN) 覆盖如学校这样的小地理区域（LAN = Local Area）。广域网 (WAN) 连接远距离的局域网，比如互联网（WAN = World-spanning 横跨世界的）。

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5. Internet & Communication | 互联网与通信

The Internet is a global network, while the World Wide Web is a collection of web pages accessed via the Internet. Protocols define the rules of communication. Knowing these terms clarifies how we browse and share information.

互联网是全球性网络，而万维网是通过互联网访问的网页集合。协议定义了通信规则。了解这些术语能阐明我们如何浏览和共享信息。

IP Address: A unique numerical label for each device on a network, like a postal address for your house. IPv4 uses 4 numbers separated by dots, e.g. 192.168.1.1.

IP 地址：网络上每个设备的唯一数字标签，就像你房子的邮寄地址。IPv4 使用由点分隔的 4 个数字，例如 192.168.1.1。

DNS (Domain Name System): Translates human-readable domain names (like tutorhao.com) into IP addresses. Picture it as a massive phonebook for the internet.

DNS（域名系统）：将人类可读的域名（如 tutorhao.com）翻译为 IP 地址。想象成互联网的巨型电话簿。

Protocol: A set of rules that governs how data is transmitted. Key ones include TCP/IP (the fundamental suite), HTTP, and FTP. Think of protocols as ‘digital etiquette’ that all devices must follow.

协议：管理数据传输的一套规则。关键协议包括 TCP/IP（基础协议族）、HTTP 和 FTP。将协议想象成所有设备必须遵守的’数字礼节’。

HTTP vs HTTPS: Hypertext Transfer Protocol (HTTP) is used to transfer web pages. HTTPS adds encryption (the ‘S’ stands for Secure) to protect data, indicated by a padlock in the browser. Always look for HTTPS when entering personal details.

HTTP 与 HTTPS：超文本传输协议 (HTTP) 用于传输网页。HTTPS 添加了加密（’S’代表安全）来保护数据，浏览器中会显示挂锁图标。输入个人信息时务必查看是否有 HTTPS。

Cloud Computing: Storing and accessing data and programs over the Internet instead of your local computer’s hard drive. Think of your files living in a magic ‘cloud’ high above, accessible from any device.

云计算：通过互联网而非本地计算机硬盘来存储访问数据和程序。想象你的文件住在高空的’魔法云’里，可从任何设备访问。

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6. Computational Thinking | 计算思维

Computational thinking is a problem-solving approach that breaks down complex problems. It’s the foundation of creating efficient algorithms and programs. Mastering these concepts improves your logical reasoning.

计算思维是一种分解复杂问题的解决方法。它是设计高效算法和程序的基础。掌握这些概念能提升你的逻辑推理能力。

Abstraction: Focusing on the important details and ignoring irrelevant ones. Making a map of a school showing key rooms, but not every brick. In programming, you model only what is necessary.

抽象：关注重要细节，忽略无关信息。就像画学校地图时标明关键房间，但不画每一块砖。在编程中，你只对必要的内容建模。

Decomposition: Breaking a problem into smaller, more manageable parts. Like planning a birthday party: you split it into cake, decorations, games, and guests. Each part is easier to handle.

分解：将大问题拆分成更小、更容易处理的部分。就像策划生日派对：你将其拆分为蛋糕、装饰、游戏和宾客。每个部分都更易处理。

Pattern Recognition: Finding similarities or trends in problems to reuse solutions. If you design a robot to walk on flat ground, you can adapt that pattern for slightly sloped surfaces. Faster than starting from scratch.

模式识别：发现问题中的相似性或趋势以复用解决方案。如果设计了一个在平地上行走的机器人，你可以将该模式适配到略有坡度的表面，这比从头开始要快。

Algorithmic Thinking: Designing a step-by-step solution to a problem. This is not just coding; it’s planning the specific sequence of actions needed, like writing a detailed recipe for a computer to follow.

算法思维：设计解决问题的分步方案。这不仅仅是写代码，而是规划具体的操作序列，就像给计算机写一份详细的食谱去执行。

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7. Algorithms & Flowcharts | 算法与流程图

An algorithm is a precise, step-by-step set of instructions to solve a problem. Flowcharts visually represent algorithms using standard symbols. Both are vital to planning before you code.

算法是一套精确、按步骤排列的解决问题的指令。流程图使用标准符号将算法可视化。两者都是在编码前进行规划的重要工具。

Algorithm: A sequence of unambiguous instructions. A recipe is an algorithm; so is a set of multiplication steps. The key is that each step is clear and finite.

算法：一系列明确的指令。食谱就是一套算法；乘法步骤也是。关键是每一步都清楚且有限。

Flowchart: A diagram that uses shapes like ovals (Start/End), rectangles (Processes), diamonds (Decisions), and arrows to show the flow of an algorithm. Remember ‘Oval to start, rectangle for action, diamond to decide.’

流程图：使用椭圆（开始/结束）、矩形（处理）、菱形（判断）和箭头表示算法流程的图表。记住口诀：’椭圆起点终点，矩形执行动作，菱形用来判断。’

Pseudocode: A text-based method of writing algorithms that looks like a simplified programming language. It uses clear English-like statements: INPUT, OUTPUT, IF…THEN…ELSE, WHILE. It bridges human language and code.

伪代码：一种基于文本的算法书写方法，看起来像简化的编程语言。它使用清晰易懂的类似英语的语句：INPUT、OUTPUT、IF…THEN…ELSE、WHILE。它是人类语言和代码之间的桥梁。

Sequence, Selection, Iteration: The three building blocks of algorithms. Sequence means doing steps in order; Selection means making a choice (IF); Iteration means repeating steps (loops). All programs use these constructs.

顺序、选择、迭代：算法的三大基础构件。顺序是按顺序执行步骤；选择是做出判断 (IF)；迭代是重复执行步骤（循环）。所有程序都使用这些结构。

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8. Programming Basics | 编程基础

Programming involves writing code to instruct the computer. Understanding core concepts like variables, data types, and control structures allows you to create functional programs. These terms are the grammar of every programming language.

编程涉及编写代码来指示计算机。理解变量、数据类型和控制结构等核心概念能让你创建实用的程序。这些术语是每种编程语言的’语法’。

Variable: A named storage location in memory that holds a value which can change. Think of it as a labelled box: score = 10. You can look inside and update the number.

变量：内存中一个命名的存储位置，保存可更改的值。想象成一个带标签的盒子：score = 10。你可以查看并更新里面的数字。

Data Type: Defines what kind of data a variable can hold, such as integer (whole numbers), float (decimal), string (text), or Boolean (True/False). Choosing the right type prevents errors, like trying to add text to a number.

数据类型：定义变量可以保存的数据类型，如整型（整数）、浮点型（小数）、字符串（文本）或布尔型（True/False）。选择合适的类型可以防止错误，比如试图把文本和数字相加。

Assignment: The process of giving a value to a variable, usually with the equals sign, e.g. age = 13. This does not mean equality in a mathematical sense; it’s ‘put this value into this box’.

赋值：为变量赋予一个值的过程，通常使用等号，如 age = 13。这在数学意义上并不代表相等；而是’把这个值放进这个盒子’。

Condition (IF statement): A decision-making structure that runs a block of code only if a condition is true. IF it is raining, THEN take an umbrella. The condition is a Boolean expression.

条件 (IF 语句)：一种做出决策的结构，只有当条件成立时才运行代码块。如果下雨了，那么带上雨伞。条件就是一个布尔表达式。

Loop (Iteration): Repeating a set of

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