📚 IB Computer Science: Quick Memorization with Mind Maps | IB 计算机：思维导图速记
IB Computer Science covers a vast landscape—from binary logic to high-level web science options. Mind maps help you condense entire topics into single-page visual summaries, linking related concepts and revealing the big picture. This guide walks you through building mind maps for every core topic, accelerating your revision and improving long-term retention.
IB 计算机科学涵盖从二进制逻辑到高级网络科学选修的广泛内容。思维导图能将整个主题浓缩为一页视觉摘要，连接相关概念，展现全局。本指南将带你为每个核心主题构建思维导图，加速复习，提高长期记忆。
1. Why Mind Maps Work for IB CS | 为什么思维导图对 IB 计算机有效
Mind maps mimic the brain's associative nature. By placing a central topic and radiating branches, you create a spatial network of keywords. Colour coding and imagery reinforce memory. In IB CS, this method is especially effective for linking abstract concepts like protocols, data structures and system design.
思维导图模仿大脑的联想方式。放置中心主题并向外辐射分支，创建关键字的空间网络。颜色编码和图像能强化记忆。在 IB 计算机科学中，这种方法对于连接协议、数据结构和系统设计等抽象概念特别有效。
Start with a central image or keyword, add main branches for subtopics, then drill down. Use only one word per branch when possible. For example, for 'Networks' you might branch: Topology, Protocols, Security, Wireless, which then expand.
从中心图像或关键词开始，添加主要分支表示子主题，然后深入。尽可能每条分支一个单词。例如“网络”，可分出：拓扑、协议、安全、无线，再进一步扩展。
2. The Big Picture: IB CS Syllabus at a Glance | 全景概览：IB 计算机科学大纲速览
Before you draw detailed mind maps, create a master map of the entire syllabus. The IB Computer Science course (first assessment 2025) has core topics for SL/HL and additional HL topics. A quick overview improves orientation. Use a core node 'IB CS' and branches: System fundamentals, Computer organisation, Networks, Computational thinking & programming, Abstract data structures (HL), Resource management (HL), Control (HL), and the chosen option.
在绘制详细导图前，先创建整个大纲的主导图。IB 计算机科学课程（2025年首考）包含 SL/HL 核心主题和 HL 扩展主题。快速概览有助于定位。使用中心节点“IB CS”，分支包括：系统基础、计算机组成、网络、计算思维与编程、抽象数据结构 (HL)、资源管理 (HL)、控制 (HL) 以及所选选修。
Colour code HL topics in red or orange to highlight their importance. This master map acts as a dashboard, reminding you which areas still need deeper mind maps.
用红色或橙色高亮 HL 主题。这张主图就像仪表盘，提醒你还有哪些部分需要更深入的思维导图。
3. Mind Map for Topic 1 – System Fundamentals | 主题1 – 系统基础 思维导图
Central node: System Fundamentals. First-level branches: System design basics, Computer system roles, System lifecycle, Security & privacy, Ethical & environmental concerns.
中心节点：系统基础。一级分支：系统设计基础、计算机系统角色、系统生命周期、安全与隐私、伦理与环境问题。
Under System design basics, branch: input, process, output, storage, feedback. Under Computer system roles, add: client, server, DNS server, router, firewall. Under System lifecycle, outline: planning, analysis, design, implementation, testing, evaluation.
在系统设计基础下分支：输入、处理、输出、存储、反馈。在计算机系统角色下添加：客户端、服务器、DNS 服务器、路由器、防火墙。在系统生命周期下列出：规划、分析、设计、实施、测试、评估。
For security, create sub-branches: malware types (virus, worm, trojan), threats (phishing, man-in-the-middle), countermeasures (encryption, 2FA, biometrics). For ethics, include: open source vs proprietary, AI ethics, e-waste, digital divide.
安全方面，创建子分支：恶意软件类型（病毒、蠕虫、特洛伊木马），威胁（网络钓鱼、中间人攻击），对策（加密、双因素认证、生物识别）。伦理方面包括：开源 vs 专有、AI 伦理、电子废物、数字鸿沟。
4. Topic 2 – Computer Organization | 主题2 – 计算机组成 思维导图
Central node: Computer Organization. Main branches: CPU architecture, Memory, Secondary storage, Operating systems, Binary logic.
中心节点：计算机组成。主要分支：CPU 架构、内存、辅存、操作系统、二进制逻辑。
CPU architecture: ALU, CU, registers, cache, machine instruction cycle (fetch-decode-execute). Memory: RAM (SRAM, DRAM), ROM, virtual memory, cache hierarchy. Secondary storage: HDD vs SSD, optical, cloud storage – compare speeds and capacities. Include a branch on OS roles: memory management, multitasking, file systems, device drivers.
CPU 架构：ALU、CU、寄存器、缓存、机器指令周期（取指-译码-执行）。内存：RAM（SRAM、DRAM）、ROM、虚拟内存、缓存层级。辅存：HDD vs SSD、光盘、云存储 — 比较速度和容量。加入操作系统角色的分支：内存管理、多任务处理、文件系统、设备驱动。
Binary logic: logic gates (AND, OR, NOT, NAND, NOR, XOR), truth tables, Boolean algebra simplifications, half and full adders. Use side branches for truth table examples.
二进制逻辑：逻辑门（与、或、非、与非、或非、异或）、真值表、布尔代数化简、半加器和全加器。用侧分支举例真值表。
5. Topic 3 – Networks | 主题3 – 网络 思维导图
Central node: Networks. Branches: Network types (LAN, WAN, PAN, VLAN), Topologies (star, bus, ring, mesh), Protocols (TCP/IP, HTTP, HTTPS, FTP, SMTP, POP3), OSI model layers (Application, Transport, Network, Data link, Physical).
中心节点：网络。分支：网络类型（LAN、WAN、PAN、VLAN）、拓扑（星型、总线、环形、网状）、协议（TCP/IP、HTTP、HTTPS、FTP、SMTP、POP3）、OSI 模型层（应用层、传输层、网络层、数据链路层、物理层）。
Extend protocols with sub-branches: HTTP/HTTPS (port 80/443), DNS resolution, DHCP. For security in networks, add a branch: firewalls, VPN, SSL/TLS, MAC address filtering. Also include wireless: Wi-Fi standards (802.11), Bluetooth, advantages/disadvantages.
协议子分支扩展：HTTP/HTTPS（端口80/443）、DNS解析、DHCP。网络安全方面添加：防火墙、VPN、SSL/TLS、MAC地址过滤。还要包括无线：Wi-Fi 标准（802.11）、蓝牙、优缺点。
6. Topic 4
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