Performance of CPUs
OCR GCSE Computer Science: Paper 1 Computer Systems
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Content Notes
System Architecture
Computer architecture
What is a Computer? Embedded and Non-embedded Systems
The CPU
Components of a Modern CPU The Fetch Decode Execute Cycle Performance of CPUs
Memory
Physical memory
RAM and ROM Flash Memory
Virtual memory
The Need for Virtual Memory
Storage
Secondary storage
The Need for Secondary Storage Data Capacity
Choice of storage media
Choosing Suitable Storage Media
Wired and wireless networks
Networks
LANS and WANS Roles of Computers in Networks Benefits of Networking Network Performance Virtual Networks
Networking hardware
Networking Hardware
The Internet
The Domain Name System The Cloud
Network topologies, protocols and layers
Network topologies
Star and Mesh Topologies
WiFi and Ethernet
WiFi Frequency, Channels and Encryption Protocols (MAC and IP)
TCP/IP Stack
Layers Application Layer Protocols Packet Switching
System security
Threat types
Network Threat Types Malware
Social engineering and Network Vulnerabilities
Social Engineering Network Vulnerabilities
System software
Operating systems
The Operating System Function of the Operating System Different Operating Systems GUI vs CLI
Utility software
Defragmentation Software Backup Software Compression Software
Ethical, legal, cultural and environmental issues
Software sources and Stakeholders
Open Source vs Proprietry Software Stakeholders
Leglisation
The Data Protection Act 1998 The Computer Misuse Act 1990 Copyright Designs and Patents Act 1988 Creative Common Licensing Freedom of Information Act 2000
The impact of technology on stakeholders
Ethical Impact Cultural Impact Environmental Impact
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