Overview
Hardware Considerations
Hardware considerations are key to designing and using Human Computer Interfaces (HCIs) effectively. Choosing the right hardware affects how well a system works, its speed, and the overall user experience.
Displays come in different types (such as LCD, LED, OLED) and sizes, which can influence visibility, portability, and energy use. Resources like memory and processing power determine how quickly and efficiently a system can run applications, handle multiple tasks, and store data. Understanding these factors helps ensure the HCI meets user needs and works smoothly in its intended environment.
The right combination of display and resources improves usability, reduces lag, and supports accessibility.
Poor choices can cause slow performance, eye strain, or compatibility issues.
In exams, you need to know the purposes, advantages, and disadvantages of different hardware choices, as well as how they affect the HCI’s performance, reliability, and suitability for a given application.
Type – LCD, LED, OLED; affects image quality, energy use, and cost.
Size – Larger screens improve visibility; smaller screens increase portability.
Memory (RAM) – More RAM allows smoother multitasking and faster performance.
Processing Power – Faster processors handle complex tasks more efficiently.
Affects speed, usability, and visual clarity.
Influences battery life in portable devices.
Better performance and smoother interaction.
Higher cost for advanced hardware.
Larger displays and powerful processors may increase energy use and heat output.
Where? Classroom/desk vs on-the-go; portability vs screen size.
Who? Accessibility needs: large text/high contrast.
What? Tasks: basic vs demanding (games, video, data analysis).