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4.1 Types of software and interrupts
Software A set of instructions written in a programming language that performs one or more tasks to tell the computer what to do. System Software provides services that the computer requires , inc...……
Theo - 2026年9月9日 12:09
5.1 The internet and the World Wide Web (WWW)
| Candidates should be able to: | Notes and guidance ...……
Theo - 2026年5月25日 10:21
2.3 Encryption
Encryption Scrambles data for secure transmission. ... making data meaningless/unintelligible so it doesn’t make sense to hackers and other attackers. Uses an algorithm / key plain text is changed...……
Theo - 2026年5月18日 10:21
2.2 Methods of error detection
Explain how the data might have errors after transmission Data could be lost Data could be gained/added Data could be changed Bits could be reassembled in the wrong order Interference could occur ...……
Theo - 2026年5月18日 10:21
2.1 Types and methods of data transmission
Types and Methods of Data Transmission Data Packets Packet Structure Header Contains the IP address of the sender and the receiver The sequence number of the packet Size of the packet Payload ...……
Theo - 2026年5月18日 10:20