ICT - Practical Problem Solving In The Digital World

A few notes on stuff that might come up in the exam! :)

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Analysis is defining and describing a problem to be solved using IT. This involves looking at the
way something is currently done. This could be stock ordering, adding up total sales, selecting a
football team or working out prices for school prom tickets.
If the current system has flaws they need to be exposed and explained why they are problems. In
this context the problem selected should only be attempted if using IT is most appropriate. The
person who requires the system and those who will use it should be explained. What the intended
solution must do should be clear. A list is usually a good way to show exactly what is required;
known as objectives or requirements specification.
The outputs of the system need to be identified ­ for example, a correct ticket price printed on
each ticket with the buyer's name or a team sheet with players placed into the correct position in
a 4:4:2 formation. The data required to produce the system must be identified ­ for example, all
the expenses expected at a prom and the number of tickets expected to be sold.
The processes that will need to take place in order to gain the final outputs. This could be dividing
the prom expenses by the expected sale of tickets to achieve a break-even ticket price. Other
processes could be sorting alphabetically, performing queries, multiplying figures together or
subtracting numbers.
Design involves producing documentation which explains how data will enter the system, what
will happen to it and what it will look like after processing. The look of screen or print layouts
should be decided. Validation and verification techniques used to ensure data is sensible and
accurate as possible need to be established.
Implementation is the phase of actually producing a working system using appropriate hardware
and software. It will be a system that the end user operates in order to gain the outputs and
information originally specified in the analysis.
Testing is carried out in order to prove the system works as requested. A range of data should be
run through the system based on a pre-determined plan. The results of the test plan should be
documented and referenced clearly.
Evaluation is the stage at which the objectives or requirement specification in the analysis is
judged. A good evaluation will look at each individual objective to see if it has been achieved. If it

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If not, reasons why the objectives were
not met must be given.
What is IT?
IT is the use of technology for the input, storage, processing and transfer of data and the output of
Data and Information
Data is raw facts and figures with no meaning ­ for example, the numbers 4, 5, 6 and 7 or `trigger',
`fog' and `horse'. Presented like this have no meaning.
Information is data that has been processed and has meaning.…read more

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The strategy will also ensure that employees have up to date skills, relevant equipment with
which to perform their jobs and procedures to ensure that current relevant laws are adhered to.
Software Maintenance
Testing to ensure the software is perfect when it leaves the developers is an enormous chore.
In order to satisfy customers who have made a purchase developers have several ways of passing
an extra code to fit what has already been installed. These include the following ways.…read more


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