1
00:20:58,000 --> 00:21:03,000
You can make it rectangular, you can make 
it rounded,

2
00:21:03,100 --> 00:21:05,100
depending on what you want to focus on.

3
00:21:05,200 --> 00:21:10,000
Of course you can use different palettes, 
different types of icons.

4
00:21:10,100 --> 00:21:14,400
Again, icons are usually mnemonic

5
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and denote the action that people rather 
do.

6
00:21:19,400 --> 00:21:25,000
If you are shown a sign of a cloud, then 
you understand we mean “Cloud”, some Cloud 
technologies.

7
00:21:25,100 --> 00:21:32,500
If you show this cloud to a child, what will 
be the reaction? Well, not always clear.

8
00:21:32,600 --> 00:21:37,400
If you show a cloud to an older person, they 
will most likely think that there is some 
kind of weather stuff.

9
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Generally, their reaction to this button 
will be generally unpredictable, from the 
point of view of the designer and from the 
point of view of the programmer.

10
00:21:45,500 --> 00:21:52,500
Some people are colorblind, who do not recognize 
colors. Generally, if you make such buttons, 
or such ones,

11
00:21:52,600 --> 00:21:55,700
nothing good will come of it. They just won’t 
see them.

12
00:21:55,800 --> 00:22:02,600
It will be just a white background for them 
and maybe shades of grey, or they won’t see 
this button on the screen at all

13
00:22:02,700 --> 00:22:07,500
and will look for a long time where to press 
that OK button to close that window.

14
00:22:07,600 --> 00:22:18,900
You should always be able to switch to modes 
that allow people with different health conditions 
to work.

15
00:22:19,000 --> 00:22:24,700
In Windows, there is such a possibility,if 
the programmer has connected all these features,

16
00:22:24,800 --> 00:22:33,100
then switching Windows to the mode for colorblind 
and visually impaired should turn all programs 
into that mode.

17
00:22:33,200 --> 00:22:40,800
Well, only if the programmer specifically 
considers this. If not, then your program 
will remain with the same colors, with the 
same size.

18
00:22:40,900 --> 00:22:52,600
Next… Of course, each program can be decomposed 
into other types of display.

19
00:22:52,700 --> 00:23:04,300
For different groups of people these displays 
should be different and, so each time under 
different devices you need to reprogram each 
element, each interface,

20
00:23:04,400 --> 00:23:11,700
to do different sets of procedures over functions, 
which will be realized,

21
00:23:11,800 --> 00:23:16,600
and, accordingly, you will have the structure 
of dialogues completely changed.

22
00:23:16,700 --> 00:23:25,500
We will have this with you in the laboratories 
and we will have it on the lectures in the 
following methods too.

23
00:23:25,600 --> 00:23:34,100
Well, the main definition, yes, just as our 
subject is called, this is the most basic 
definition.

24
00:23:34,200 --> 00:23:42,300
I recommend you write it down, it will be 
admission to the exam. Who does not know 
what is the intelligent definition, will 
not receive the admission.

25
00:23:47,500 --> 00:23:57,100
Our discipline combines knowledge of the 
“psychology of cognition”, which means that 
we have to study different people in different 
aspects,

26
00:23:57,200 --> 00:24:05,400
we have to design a software product or some 
computer system according to their psychology.

27
00:24:05,500 --> 00:24:15,900
A computer system can be this model(on left 
board), the one we considered here before, 
that we have a mechanized part, a computer,

28
00:24:16,000 --> 00:24:25,000
maybe some firmware, drivers, there are electronic 
data transmissions, and then there is an 
human – machine interface for user interaction.

29
00:24:25,100 --> 00:24:32,400
This is exactly our computerized stuff. In 
addition, sociology. Sociology deals with 
groups of people.

30
00:24:32,500 --> 00:24:39,700
If you know, there are such youth trends 
like Goths, Emo, whoever else is there.

31
00:24:43,000 --> 00:24:50,300
Yes, they also perceive things differently, 
so if you want to make a program for them, 
for being actively used,

32
00:24:50,400 --> 00:24:56,400
it is desirable to know their social behavior 
and how they deal with that kind of program.

33
00:24:56,500 --> 00:25:08,400
Ergonomics is also necessary. Ergonomics 
determines comfort. That is how much this 
product will not be redundant,

34
00:25:08,500 --> 00:25:14,900
how quickly you will react to it and be able 
to use it immediately and you will not be

35
00:25:15,000 --> 00:25:21,600
psychologically irritated and you will always 
be psychologically satisfied with the ease 
of use.

36
00:25:21,700 --> 00:25:30,500
Of course, nothing can be done without system 
analysis. You must have had a subject like 
“Systems Analysis”?

37
00:25:30,600 --> 00:25:33,900
Yes or no?

38
00:25:34,000 --> 00:25:43,300
Where you had to collect all the parameters 
and according to the statistics calculate 
all the components and deviations from the 
norms.

39
00:25:43,400 --> 00:25:51,100
Accordingly, these deviations and finding 
the average value allows you to recover this 
system analysis.

40
00:25:51,200 --> 00:26:00,000
And the so-called industrial design. If we 
take an artistic design, the artist can draw 
a picture,

41
00:26:00,100 --> 00:26:07,100
he thinks that his colors are optimal, that 
these sizes of sun, grass and the rest are 
good,

42
00:26:07,200 --> 00:26:11,200
but if it’s all pasted on a tiny screen, 
this picture just does not fit.

43
00:26:11,300 --> 00:26:17,600
For example, the color display technology 
on this display does not allow you to display 
all the palettes.

44
00:26:17,700 --> 00:26:27,400
Therefore, the industry, the implementation 
of display types, affects the drawing of 
your buttons.

45
00:26:27,500 --> 00:26:33,500
You will write a program, for example, for 
black and white displays, such as parking.

46
00:26:33,600 --> 00:26:38,400
Colors are not necessary there, so you are 
only interested in fonts and resolution.

47
00:26:38,500 --> 00:26:45,700
You need to consider exactly where, on which 
devices, in which cases, your program will 
work.

48
00:26:48,600 --> 00:26:59,000
Well, since you and I use mostly computers, 
we need all interfaces that we will develop

49
00:26:59,100 --> 00:27:09,000
within the frames of human-machine interaction 
for the widest class of users, to ensure 
this measure of efficiency.

50
00:27:09,100 --> 00:27:16,900
Have you heard it, in some other subjects… 
did you have economics… in the first year?

51
00:27:17,000 --> 00:27:26,100
Maybe you had an economy in school. You probably 
had to count efficiency. Human-hours, right?

52
00:27:26,200 --> 00:27:31,000
We calculated labor productivity, economic 
effect. Counted, right?

53
00:27:31,100 --> 00:27:36,800
You can also calculate these economic effects 
from the interfaces.

54
00:27:36,900 --> 00:27:44,200
If there is a huge window and there are too 
many buttons, the efficiency for the average 
person will be low.

55
00:27:44,300 --> 00:27:49,100
If he is an experienced programmer, then 
the more buttons, the better.

56
00:27:49,200 --> 00:27:54,800
The efficiency of it on the contrary will 
increase than the fact that it will be poking 
long between windows.

57
00:27:54,900 --> 00:28:01,100
Now, what else is there to mean? The so-called 
user experience.

58
00:28:01,200 --> 00:28:06,900
Have you heard the concept of ‘user experience’ 
everywhere in vacancies, in offices?