2103379
Description
Mind Map by bubblesthelabrad, updated more than 1 year ago
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Created by bubblesthelabrad
almost 10 years ago
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System Design
- HCI
- The engineering process
of designing interactive
computer systems so that
they are efficient,
pleasing, easy to use and
do what people want.
- The engineering process
of designing interactive
computer systems so that
they are efficient,
pleasing, easy to use and
do what people want.
- Interfaces
- Command
Line
- Allows the user to
directly input
commands which
instruct what the
computer is to do
- Used with more
experienced users
with a knowledge of
commands as well
as syntax
- They are fast,
direct and use
less memory
than a GUI
- Allows the user to
directly input
commands which
instruct what the
computer is to do
- Menus
- User friendly as it's
simple and doesn't
involve
remembering
commands
- In a hierarchical
system, further menus
are presented until the
desired action is
identified and selected.
- User friendly as it's
simple and doesn't
involve
remembering
commands
- Forms and
Dialogue
Boxes
- A form is
displayed when
the user is
required to enter
data.
- Examples are: detail
about a customer
being needed or
trying to create an
invoice
- A form is
displayed when
the user is
required to enter
data.
- Natural
Language
- In other
words "Plain
English"
- In their early stages
of development,
having limited syntax
and vocabulary
- Advantages
- No special
training as
normal
dialogue
- Flexibility
and Power
- Users can
construct their
own questions
and commands
- No special
training as
normal
dialogue
- Disadvantages
- Difficulty to
keep to a
strict
vocabulary
- Precise and
formal
language is
needed
- Mislead to
think the
computer is
intelligent
- Difficulty to
keep to a
strict
vocabulary
- In other
words "Plain
English"
- Graphical
User
- The familiar WIMP
(Windows, Icons,
Mouse and
Pull-Down menus)
environment
- Advantages
- Speed of
learning is
increased
rather than CLI
- Confidence
from the user
and simplicity
of the layout
- Speed of
learning is
increased
rather than CLI
- Disadvantages
- Experienced users
can take longer to
navigate to
somewhere they
want
- They need a
more
powerful
processor and
a lot of
memory
- Experienced users
can take longer to
navigate to
somewhere they
want
- The familiar WIMP
(Windows, Icons,
Mouse and
Pull-Down menus)
environment
- Command
Line
- Designing
- Validation
- After a new computer
system has been designed, a
check has to be made to
ensure the new design is
compatible with the original
specifications of the system.
- After a new computer
system has been designed, a
check has to be made to
ensure the new design is
compatible with the original
specifications of the system.
- Review
- Does the design
correspond with the
specifications?
- Does it meet
the set
objectives?
- Have the
appropriate
techniques been
met?
- Is the User
Interface
appropriate?
- Does the design
correspond with the
specifications?
- Validation
- Criteria
- Robust
- Should not
crash nor
fail
- Should not
crash nor
fail
- Flexible
- It can be
easily
reconfigured
- It can be
easily
reconfigured
- Reliable
- Shouldn't fail
due to design
faults
- Shouldn't fail
due to design
faults
- Portable
- It can be
used on
multiple
hardware
systems
- It can be
used on
multiple
hardware
systems
- Maintainable
- Modifications
can be made
if needed
- Modifications
can be made
if needed
- Robust
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