ICT Recap: Sections 9 to 11.

SHIPPED

Software

Hardware

Information

People

Procedured

Data

What is ICT?

ICT is the use of technology for the input,
processing, storage and transfer of data
and the output of information.

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.

Interfaces

Menu driven

good for small tasks

slow for experienced users

limited options

natural language

easy to use

Command line

need to know commands

need experience using command line interface

does not use many system resources

is the most powerful of the interfaces

Graphical User Interface

WIMP- windows, icons, menus, pointers.

can customise

easy to use

high system resources needed

makes use of natural language

Characteristice of the users- PETE

environment of use

physical ability and age

experience

tasks to be undertaken

Personal skills- FOGWEPT

flexible

oral communication

good

written communication

excellent

problem solving and patience

team work

Team skills - BUSGEMS

balance of skills

understanding of requirements

strengths and weaknesses identified

good communitcation

excellent team leader

monitoring progress and costs

standardised documentation

Job roles

systems analyst

programmer/designer

webmaster

ICT technician

network manager

rollout engineer

helpdesk operator

software tester

technical editor

User support methods

other users

chatting to friends, email support, forums.

3rd party

email, dvd tutorials, knowledge base, bulletin board, user manuals, chat helpline.

Software house

email, chat helpline, dvd tutorials, user manuals
help within software package, hover over text,
knowledge base on website

How data arises

Direct data is collected for a specific purpose.
This is the original source.

Indirect data is the reuse of original source data
for a completely different purpose.

Data

Raw facts and figures with no meaning or value

Four types

Text

email address, phone number,
name etc.

Numbers

exam mark, age price (£)

Images

still/moving, digital photograph or recorded video

Sound

recorded sound

Coding and Encoding

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.

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.