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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">My understanding was that if it is an external person, organisation or other system entering data into, or receiving data from your
system, then it is an entity external to your system and needs to be represented.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">The example I give students is that Centrelink requires data from the bank about your bank accounts, balances, etc. The banking system
therefore is an entity entering data into the Centrelink system for them to cross check with what you have told Centrelink about your income. Equally, Centrelink is an entity receiving a data flow from the banking system, so would be represented as an entity
in the banking system data flow diagram.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Hope this helps, and happy to be corrected,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Michael Walker,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Doncaster Secondary College.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> sofdev-bounces@edulists.com.au [mailto:sofdev-bounces@edulists.com.au]
<b>On Behalf Of </b>Ciappara, Anthony A<br>
<b>Sent:</b> Wednesday, 1 June 2016 9:34 AM<br>
<b>To:</b> Year 12 Software Development Teachers' Mailing List <sofdev@edulists.com.au><br>
<b>Subject:</b> Re: [Year 12 SofDev] Data Flow: Can a machine / sensor be an entity?<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black">Daryl<o:p></o:p></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black"> <o:p></o:p></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black">How did you deal with it in the context diagram? As an entity that sends data to the system or as part of the system?<o:p></o:p></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black"> <o:p></o:p></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black">Anthony<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black">
<a href="mailto:sofdev-bounces@edulists.com.au">sofdev-bounces@edulists.com.au</a> [sofdev-bounces@edulists.com.au] on behalf of Croke, Daryl D [croke.daryl.d@edumail.vic.gov.au]<br>
<b>Sent:</b> Tuesday, 31 May 2016 9:03 PM<br>
<b>To:</b> Year 12 Software Development Teachers' Mailing List ý[sofdev@edulists.com.au]ý<br>
<b>Subject:</b> [Year 12 SofDev] Data Flow: Can a machine / sensor be an entity?</span><span style="color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Verdana",sans-serif;color:black">Hi all<br>
<br>
Can a machine / devise / sensor be an entity in a data flow diagram?<br>
<br>
I want to model an Arduino home project I have been working on for my students. Three temperature sensors inside a solar heater will determine the fan speed of an output fan blowing warm air into my house during winter. The user will be able to view temperature,
fan speed, watts generated, minimum/maximum temperatures and be able to change fan trip levels and CMF ratings.
<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Verdana",sans-serif;color:black"><br>
It would be easy if I could treat the Arduino device and sensors as being an entity that has inputs and the code to be viewed as the process. Level One and Two drawings would break up the sub-processes. Not sure if this technically correct?<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black">Cheers<br>
<br>
Daryl Croke<o:p></o:p></span></p>
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Mount Ridley College<br>
8338 3600<br>
<a href="https://www.edumail.vic.gov.au/owa/redir.aspx?REF=IDWvJcYrweRr7xgWuy-BsCzeCk038uWbHFyfrlWzthp5MPDIq4nTCAFodHRwOi8vbW91bnRyaWRsZXljb2xsZWdlLnZpYy5lZHUuYXUv" target="_blank">http://mountridleycollege.vic.edu.au/</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><i><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black">keep on coding</span></i></b><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><i><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black"><a href="https://www.edumail.vic.gov.au/owa/redir.aspx?REF=VmCEdGwd_yD4ZC4zcv_p4VTUZ-3K8wlZumMbPBGh6lZ5MPDIq4nTCAFodHRwOi8vZ2Vla3N0dWZmLmdsb2JhbDIudmljLmVkdS5hdS8." target="_blank">http://geekstuff.global2.vic.edu.au/</a><br>
<a href="https://www.edumail.vic.gov.au/owa/redir.aspx?REF=zJjXq1ev_2DB5cE30EuE6yXw9YAiao9K9WPNTlTT--Z5MPDIq4nTCAFodHRwOi8vcGh5c2ljYWxjb21wdXRpbmcuZ2xvYmFsMi52aWMuZWR1LmF1Lw.." target="_blank">http://physicalcomputing.global2.vic.edu.au/</a></span></i><span style="font-size:10.0pt;font-family:"Tahoma",sans-serif;color:black"><o:p></o:p></span></p>
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