Learn · ⁨学习⁩

IGCSE Computer Science · ⁨IGCSE 计算机科学⁩

Choose a lesson to begin. · ⁨选择一门课程开始。⁩

1 Data representation · ⁨数据表示⁩ 0 / 4 Watch lesson · ⁨观看课程⁩

1.1.1 Number systems and conversions · ⁨数字系统与转换⁩ 1.1.2 Binary arithmetic · ⁨二进制算术⁩ 1.2 Text, sound and images · ⁨文本、声音与图像⁩ 1.3 Data storage and compression · ⁨数据存储与压缩⁩

2 Data transmission · ⁨数据传输⁩ 0 / 3 Watch lesson · ⁨观看课程⁩

2.1 Types and methods of data transmission · ⁨数据传输的类型与方法⁩ 2.2 Methods of error detection · ⁨差错检测方法⁩ 2.3 Encryption · ⁨加密⁩

3 Hardware · ⁨硬件⁩ 0 / 4 Watch lesson · ⁨观看课程⁩

3.1 Computer architecture · ⁨计算机体系结构⁩ 3.2 Input and output devices · ⁨输入与输出设备⁩ 3.3 Data storage · ⁨数据存储⁩ 3.4 Network hardware · ⁨网络硬件⁩

4 Software · ⁨软件⁩ 0 / 2 Watch lesson · ⁨观看课程⁩

4.1 Types of software and interrupts · ⁨软件类型与中断⁩ 4.2 Types of programming language, translators and integrated development environments (IDEs) · ⁨编程语言类型、翻译程序与集成开发环境（IDE）⁩

5 The internet and its uses · ⁨互联网及其应用⁩ 0 / 3 Watch lesson · ⁨观看课程⁩

5.1 The internet and the world wide web · ⁨互联网与万维网⁩ 5.2 Digital currency · ⁨数字货币⁩ 5.3 Cyber security · ⁨网络安全⁩

6 Automated and emerging technologies · ⁨自动化与新兴技术⁩ 0 / 3 Watch lesson · ⁨观看课程⁩

6.1 Automated systems · ⁨自动化系统⁩ 6.2 Robotics · ⁨机器人技术⁩ 6.3 Artificial intelligence · ⁨人工智能⁩

7 Algorithm design and problem-solving · ⁨算法设计与问题求解⁩ 0 / 3 Watch lesson · ⁨观看课程⁩

The development life cycle and design tools · ⁨开发生命周期与设计工具⁩ Validation, verification and trace tables · ⁨验证、核对与追踪表⁩ Standard algorithms · ⁨标准算法⁩

8 Programming · ⁨程序设计⁩ 0 / 3 Watch lesson · ⁨观看课程⁩

8.1.1 Programming concepts — data and control structures · ⁨编程概念——数据与控制结构⁩ 8.1.2 Operators, strings and subroutines · ⁨运算符、字符串与子程序⁩ 8.2 Arrays · ⁨数组⁩ 8.3 File handling · ⁨文件处理⁩

9 Databases · ⁨数据库⁩ 0 / 2 Watch lesson · ⁨观看课程⁩

Database basics · ⁨数据库基础⁩ Querying with SQL · ⁨用 SQL 查询⁩

10 Boolean logic · ⁨布尔逻辑⁩ 0 / 2 Watch lesson · ⁨观看课程⁩

Logic gates · ⁨逻辑门⁩ Logic expressions and circuits · ⁨逻辑表达式与电路⁩