Human-computer interaction (HCI) is a multidisciplinary subject that focuses on computer design and user experience. It brings together expertise from computer science, cognitive psychology, behavioural science, and design to understand and facilitate better interactions between users and machines.

Human–computer interaction (HCI) is the area of intersection between psychology and the social sciences, on the one hand, and computer science and technology, on the other. HCI researchers analyse and design-specific user-interface technologies (e.g. three-dimensional pointing devices, interactive video).

Social Psychology: The Study of Human Interaction.

HCI is more flexible, scalable, and easy to maneuver. Cisco points out that HCI “enables companies to gain the benefits of on-demand infrastructure for data-centric workloads without placing resources in public clouds.” It is readily accessible to purchase. HCI is capable of increased data protection.

Human interaction is not only physically beneficial, but also imperative for mental health. Lending an open ear and touch to those who are in need of human interaction not only considers the well-being of others but promotes personal physical, emotional and mental well-being.

 HCI is the study of interaction between people (users) and computers.  Human Computer Interaction is concerned with the design, evaluation and implementation of interactive computing systems for human use and with the study of major phenomena surrounding them.

The most common impact that HCI has had on society is making everyday life easier by improving how easy it is to use computers and other devices. Current technology allows people who have had no training to be able to use most devices.

Human-computer interaction (HCI) is a multidisciplinary field of study focusing on the design of computer technology and, in particular, the interaction between humans (the users) and computers. While initially concerned with computers, HCI has since expanded to cover almost all forms…

The kind of information that HCI practitioners compile is used to constantly refine the world of UX design. 5 Without constant testing, polling, and data gathering, the concept of intuitive computer usability will stagnate, and IT products, like phones and laptops, will continue to be designed in ways that fall short in serving the end user.

The human–computer interface can be described as the point of communication between the human user and the computer. The flow of information between the human and computer is defined as the loop of interaction. The loop of interaction has several aspects to it, including:

It expanded from early graphical user interfaces to include myriad interaction techniques and devices, multi-modal interactions, tool support for model-based user interface specification, and a host of emerging ubiquitous, handheld and context-aware interactions.” — John M. Carroll, author and a founder of the field of human-computer interaction.