The Impact of Human-Computer Interaction on Usability and Efficiency

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Part 1: The interactive System and its Users
Since the dialogue between a person and a computer occurs through the program
interface, the discussion will deal mostly with interfaces. The second part will consider the
impact of computers on modern society. The interface of the application in the interaction of man
and computer. When it comes to the interface of the software, the usability theme is necessarily
affected. In the 21st century. Man spawned super-complex machines, went into outer space,
conquered thermonuclear reaction, learned to consume the values of nature on a huge scale
(Anderson, et al, 2017). An example of interactive systems and its users include the google voice
search app. This is an application that allows user interaction with their mobile phones by
creating a voice recognition and was first released in android phones.
What is “usability”?
Usability Since the topic is closely related to the computer environment, it would be quite
logical to get acquainted with the definitions. Definitions, without any doubt, are a rather dry
form of presenting the material, but in order to notice that we are talking not just about design art
or feng shui, but about scientific discipline, add them to the text: It is a concept in micro
ergonomics, an ergonomic characteristic of the degree of convenience of an object for use by
users in achieving certain goals in a certain context. The term has a connection with the concept
of “ergonomics”, but unlike the latter, it is less associated with technical aesthetics, with the
appearance and more tied to the utility of the “usable” object. In this case, the relative
importance of all three aspects is determined by this very context (Card, 2018).

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Part 2: The Use Cases
Is an applied science discipline dedicated to improving the efficiency, productivity and
usability of the tools of activity? From usability ergonomics distinguishes interest in the
efficiency of the user (consumer), and not the man-machine system as a whole. It is noticeable
that in almost every sentence of definitions there is the word “ergonomics”, which indirectly also
means usability. As well as the scope of activity on the application of the theory, principles, data
and methods of this science to ensure well-being human and optimize overall system
performance. Private from ergonomics is, which is engaged in research and design systems,
"man - machine." In particular, the design of software interfaces is under the jurisdiction of
micro ergonomics.
Part 3: The usability requirements
Five Usability requirements that help in Human Computer Interactions. There are five
requirement for a usability in human computer interactions. They include;
1. Effectiveness
The effectiveness in usability is about the degree of accuracy under which the person operating
the computer can complete the goals required. The product has to be able to support the user
while the user is performing the tasks.
2. Efficiency

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This is how fast the user is able to finish his goal or achieve the goal. This should not be
confused to effectiveness. This is about the speed of completion of the task.
3. Engagement
This happens when the user finds the product satisfactory and enjoyable to use. UI elements and
aesthetics start in having relevance here. This are not the only factors that creates a gratifying
product for the end user.
4. Error Tolerance
When a product is complex and has a lot of functionalities, there are so many room for errors
especially to a learner of the product. The usability factor should be error tolerance and be
accommodating until the user is able to learn effectively (Hibbeln, et al, 2017).
5. Ease of learning
The product should be able to let the user learn easily without any hardships. If a product
requires a lot of remembering, it is very hard to engage with the final product regularly.
Energy compatibility - taking into account the power capabilities of a person in
determining the efforts made to the governing bodies. Psychophysiological compatibility - taking
into account the human response to the color, color gamut, frequency range of the signals, shape
and other aesthetic parameters of the machine. Human-computer interaction has evolved in the
context of multidirectional scientific vectors (computer graphics, engineering psychology,
ergonomics, organization theory, cognitive science, computer science, and many others.)
Human-computer interaction is a relatively young area of interdisciplinary research. Its most