ICT Recap: Sections 9 to 11.
Section 10 - Data and information.
Coding and Encoding
Encoding is the conversion of data into binary.
This is done so that the computer can 'read' the data that is being input as computers only understand binary.
Coding is the shortening of data.
Increses input speed, is more accurate, (less GIGO), less hard disk storage. Loses detail and need to know the codes.
Raw facts and figures with no meaning or value
Four types
Sound
recorded sound
Images
still/moving, digital photograph or recorded video
Numbers
exam mark, age price (£)
Text
email address, phone number,
name etc.
How data arises
Indirect data is the reuse of original source data
for a completely different purpose.
Direct data is collected for a specific purpose.
This is the original source.
Section 11 - People and ICT systems.
User support methods
Software house
email, chat helpline, dvd tutorials, user manuals
help within software package, hover over text,
knowledge base on website
3rd party
email, dvd tutorials, knowledge base, bulletin board, user manuals, chat helpline.
other users
chatting to friends, email support, forums.
Job roles
technical editor
software tester
helpdesk operator
rollout engineer
network manager
ICT technician
webmaster
programmer/designer
systems analyst
Team skills - BUSGEMS
standardised documentation
monitoring progress and costs
excellent team leader
good communitcation
strengths and weaknesses identified
understanding of requirements
balance of skills
Personal skills- FOGWEPT
team work
problem solving and patience
excellent
written communication
good
oral communication
flexible
Characteristice of the users- PETE
tasks to be undertaken
experience
physical ability and age
environment of use
Interfaces
Graphical User Interface
makes use of natural language
high system resources needed
can customise
WIMP- windows, icons, menus, pointers.
Command line
is the most powerful of the interfaces
does not use many system resources
need experience using command line interface
need to know commands
Menu driven
easy to use
natural language
limited options
slow for experienced users
good for small tasks
Section 9 - ICT systems and their components.
What is an ICT system?
ICT is the use of technology for the input,
processing, storage and transfer of data
and the output of information. This information
can then be used by human beings or other
ICT systems.
What is ICT?
ICT is the use of technology for the input,
processing, storage and transfer of data
and the output of information.
SHIPPED
Data
Procedured
People
Information
Hardware
Software
