Unit 4

Syllabus content - worth 20% of A2

• Topic 1 - Hardware and communication

• Topic 2 - Data transmission

• Topic 3 - Data representation and data types

• Topic 4 - Organisation and structure of data

• Topic 5 - Databases and distributed systems

• Topic 6 - The operating systems

• Topic 7 - The need for different types of software systems and their attributes

• Topic 8 - Data security and integrity processes