[Year 12 SofDev] IPO charts

[Mark Kelly]

My 2.2c worth...  the output would be more finely grained.  Each output 
should be a piece of information (e.g. "total GST") and all those pieces 
add up to the information payload of an invoice.

Sandra Mobbs wrote:
> Hi All
>  
> I have been told that I am doing IPO charts (and teaching how to do IPO charts) incorrectly. For an IPO chart for creating an invoice, I would have used:
>  
> Input - invoice date, Cust Name etc, quantities, prices
> Processing - generate invoice number, calculate GST and total for invoice, generate invoice
> Output - invoice
>  
> I have been told that 'invoice' in the output column is not enough in software development, I have to include what details will be on the invoice so that input can be determined.
>  
> Could someone clear this up for me and maybe provide an example. Because some of the textbook examples use smaller tasks I am not quite sure now. I would like to be sure before we start revision after the hols.
>  
> Thanks
>  
> Sandra Mobbs
> VCE IT and Business Management Teacher
> St Joseph's College Melbourne
> Ph: 9269 6955
> 
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-- 
Mark Kelly
Manager - Information Systems
McKinnon Secondary College
McKinnon Rd McKinnon 3204, Victoria, Australia
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kel at mckinnonsc.vic.edu.au

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