O level Computer science

O level computer science paper 1 notes by sir Zafar ali khan

1.1.1 Binary systems

1.1.2 Hexadecimal

1.1.3 Data Storage

1.2.1 Data Transmission

1.2.2 Security aspects

1.2.3 Internet principle of Operation

1.3.1 Logic gates<

1.3.2 Computer architecture and fetch execute cycle

1.3.3 Input devices

1.3.4 Output devices

1.3.5 Memory, storage, devices and media

1.3.6 Operating systems

1.3.7 High and low level languages and their translators

1.4 Security

1.5 Ethics