The specialized components computers have for interacting with people
• Input and output devices
– mechanics and characteristics of particular hardware devices, performance characteristics (human and system), esoteric devices, virtual devices
• Dialogue techniques
– the basic software architecture and techniques for interacting with humans
• e.g. dialog inputs and outputs; interaction styles; issues
•Computer graphics
– basic concepts from computer graphics that are especially useful to HCI
• Dialogue architecture
– software architecture and standards for interfaces
• e.g., screen imaging; window managers; interface toolkits; multi-user architectures, look and feel, standardization and interoperability
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