1. The Characteristics and Uses of a Software Program
By Kyle Clifford
24/11/2018
Unit 12: Software Development

2. Event Driven Programming
Event driven programming is a program responds to a user input that’s why It can be written using a procedural approach examples of events are click ,double click , mouse movement and many more.
Click (Event)
Click
(Event)
GUI
GUI (Graphical User Interface) this an interface that can be used by a human so that they can interact with a program or electrical device. Examples of this is your mobile phone which has a touch screen with a keyboard.
24/11/2018
Unit 12: Software Development

3. Unit 12: Software Development
Colours of code
Blue = is a command used by the user
Green = User input comments
Aqua= Objects or properties
Black = Code input by programmer
Red = Text used in between quotation marks
24/11/2018
Unit 12: Software Development

4. The purpose of the first program
The purpose is to produce a printed out copy of multiplication
Input your name
Input a number 1 to 20
User can view there product before printing using print preview
This program’s purpose is to help students understand how printing can be used in VB.Net, I know this by how basic and how it only focus’s on the print feature.
24/11/2018
Unit 12: Software Development

5. Unit 12: Software Development
First Program
First starting the program
Program with data input
I call this the “First Program” as its given name is “Using Print Documents” being poorly named this means the code is lazy or that this was used to show an example of how to use code to print out copy's of information to be used in a different program
It also allows you to put your name on the print out by using the text box and typing your name.
This is an event driven program is used to print out multiples of a number from 1 to 20 chosen by the user.
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Unit 12: Software Development

6. Unit 12: Software Development
The result from the program
The end product of the program can work out the times table from 1 to 20
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Unit 12: Software Development

7. Unit 12: Software Development
The code used
The start of the code used and my explanation of what each bit does
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Unit 12: Software Development

8. Unit 12: Software Development
Validation
Gives limitations to the program what the user can input by limiting characters to 20 for the name and number.
Validation puts restrictions on what the user inputs but its not there to stop you its there to make sure its correctly input so that its not a waist of time.
It also stops you form being able to type numbers were there should be letter or in reverse. It’s a very unique tool and is very helpful.
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Unit 12: Software Development

9. Unit 12: Software Development
Variables
Global variable
Local variable
Global variable always start at the top of a project before any sub-routine and they can be linked to through out the code in any of the other sub-routine’s
Local variable can only be accessed in that sub-routine and no other.
The program uses a lot of variables global and local these are used to tell the program what data type you want that specific variable to be e.g. string, integer… it does not have many arrays but that’s ok you don’t always need them.
Local variables
Local variable can only be accessed in that sub-routine and no other so if I tired to open the above variables in another sub-routine it would have no idea what it is, that’s why this local variable for the font style and size is located in its own sub-routine.
Arrays
Arrays are variables which store more than one value
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Unit 12: Software Development

10. Unit 12: Software Development
Sub-routines
Subroutines are used to separate code In to specific category's
Its split into category's so the software knows what action to take for a certain event
What happens if I don’t enter a name?
There are a different sub-routines other than private sub but as the program did not use any others so I left them out. This is a sub-routine its started by using the tag “Private Sub” and ended with the tag “End Sub”. Subroutines are used to separate code In to specific category's so code only when it if a certain event happens this is used in the first program so that the code is not confusing and so that the program will know what to do if some thing happens .
This would then trigger a popup to say “you must enter a name before continuing ”
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Unit 12: Software Development

11. Unit 12: Software Development
Toolbox
Tool box is a very useful tool to create the layout of your program. In the design they use buttons, labels menu strip, group box and text box.
Tool box is a very useful tool to create the layout of your program a shame It was used poorly for this program.
They are simple to use but a little more complicated to code depending on what you want them to do.
The “TextBox” is used to allow the user to input valid information into the form, the “GroupBox” is used to section out parts of the form so that is neater and easier for the user to find features for that area of the form, the “MenuStrip” is used to create tabs at the top of the program so that any features or extras that are not on the form can be found there it also is a familiar look to what a windows program would look like, “Label” is used to help the user navigate the form by tell them what each feature is, “Button” this is used to preform certain tasks but only if the user chooses this function also has a text feature on the front to tell the user what it does.
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Unit 12: Software Development

12. Unit 12: Software Development
Quality
No minimize, maximize or close button. Will confuse user.
Bad name for the program.
Default colours and has not customized it.
Badly named labels.
This program is easy and simple to use a bit boring on the eyes as the developer has used default colours and has not customized it (except the red button) ,but it all works and its fast and fluent when it runs know errors or crashers and does what its set out to-do which is to out print a page of specific time tables from 1-20
The labels are ladled badly and need improvements the name of the program as well is very bad cause the user will wonder what it is , the code is laid out very well but maybe needs more explanation on what certain bits do in the comments just so other so if there is a change to your design or an error its easy to improve or fix.
Fast and fluent when it runs know errors or crashers.
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Unit 12: Software Development

13. Strengths and Weaknesses
Easy and simple to use
Validation(character limit)
Good code layout is very clean and easy to read
Menu strip is very useful
The design is boring and plain
Needs better label names
Better program name needed to identify the program
No help button on menu strip
Name feature seems pointless (the program would perform the same without the name feature and would be easier to code )
Strengths
Easy simple to figure out, the validation always told me what was wrong, the layout of the code was nice I knew what every part was and what it did and the menu strip allowed me to close the program.
Weaknesses
The design is small and has no collaborating colours, the labels are poorly used or not very in-depth for example “number” what number? My phone number? “name” who's name? my name? my neighbours name?, the name of the program like the labels is poorly named “Using PrintDocuments” what does this mean, and it has a name feature it seems like bad idea as the print out will only be used once an seems like a waste of time.
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Unit 12: Software Development

14. Unit 12: Software Development
Splash screen
This is the splash screen for “Jane’s Sawmill” this is used to show the developer of the program and allows the program to load correctly.
Splash screens are used for a display while the program loads
Timer
The splash screen is paired with a timer the timer is user set so it can be set to what ever time the user selects, some code is used to tell what form should display next.
Splash screens are used in many programs like most of the Microsoft office programs.
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Unit 12: Software Development

15. Unit 12: Software Development
Jane’s Sawmill
This is an invoice calculator. You type in your price and pick your date hit process and brings up your totals
It also show s the discount of being early with payments.
Invoice calculator
24/11/2018
Unit 12: Software Development

16. Purpose of Jane’s Sawmill
To help organize someone's invoice for a user
To calculate the date of payment
Make sure it is paid on date
The purpose of “Jane’s Sawmill” is to show the discount on a invoice for paying it early it uses the date and a calendar to work out how many days are left or how many days have passed on your invoice.
The code used, the notes does not like the colours for the code so I included a picture on the slide
'Examine the value in the variable intDaysDifference to determine how much discount to award
Select Case intDaysDifference
Case Is > 14 'This means that the discount awarded will be the maximum 10%
intDiscountRate = 10
lblPaymentDateDifference.Text = "You are paying the invoice " & intDaysDifference & " days early."
Case Is > 0 'This means that the discount awarded will be 5%
intDiscountRate = 5
If intDaysDifference > 1 Then
Else
lblPaymentDateDifference.Text = "You are paying the invoice " & intDaysDifference & " day early."
End If
Case Is = 0
intDiscountRate = 0
lblPaymentDateDifference.Text = "You are paying the invoice on time."
Case Else 'This means that no discount will be awarded
If intDaysDifference = -1 Then
lblPaymentDateDifference.Text = "You are paying the invoice " & (intDaysDifference * -1) & " day late."
lblPaymentDateDifference.Text = "You are paying the invoice " & (intDaysDifference * -1) & " days late."
End Select
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Unit 12: Software Development

17. Unit 12: Software Development
Examples
Late
Early
This show no discount because of it being late.
If you look at the left example it shows the discount of being early and the amount of days its early by but right one shows no discount and how late it is.
This shows a 10% discount rate of being early.
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Unit 12: Software Development

18. Unit 12: Software Development
Discount code
Calculates the percentage of the discount
This is the amount that is discounted in GBP
This is the discount formula it is very neatly laid out so that I could navigate the code easier and find key features for my PowerPoint, without this I would have had to read all the code and label it in sections myself
This shows the final price in a GBP currency
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Unit 12: Software Development

19. Unit 12: Software Development
Date and Calendar
This program uses a date and calendar code in a very unique way for the user to select there date’s.
Date and Calendar uses a few calculations to find out the days left for discount
the program then takes the date selected and finds how many days are left or passed
24/11/2018
Unit 12: Software Development

20. Unit 12: Software Development
Help form
The help form is very helpful to find out what this program is used for as it’s not the simplest thing to figure out.
I was glad to find this in the menu strip as I explained what this program was based upon and how It’s useful.
The help form is a very useful feature to a program if anyone is confused they can look for the help button on the “MenuStrip” and this would help the user.
24/11/2018
Unit 12: Software Development

21. Strengths and Weaknesses
Had a menu strip
Splash screen informs the user of who created it
Help button on menu strip
Runs very fast and efficiently
Helps you plan your invoice dates
Not very appealing
Difficult to know what it was on first glance
Bad choice of colours
No minimize or maximize button
The close button was located in the menu strip
Has default logo
Only for invoices
Strengths
Has nice laid out menu strip, the splash screen informs the user of the creator also makes it look more professional like it’s a windows program or something and allows the program to load, help button was useful to find out a bit more about the program, if I had an invoice this would be very helpful as its very good for planning.
Weaknesses
the layout is all squished together and there is no way of making the program bigger or smaller ,on first glance it is not difficult to know what it is but then I found the help screen and that helped a lot , The colours are horrible and plain ,no close button on right side of the program was really confusing and the logo was the default logo from visual basic could be confused with a new project, the program can be only used for invoice this seem like a waste of a good program it could be better by have setting on what else it could do.
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Unit 12: Software Development

22. Unit 12: Software Development
Errors I found
First program
Jane’s Sawmill
This program had no errors that I noticed.
The day at the top always says Monday no matter what day it is.
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Unit 12: Software Development

23. prjPrinting - Microsoft Visual Studio
24/11/2018
Unit 12: Software Development

24. prjPrinting - Microsoft Visual Studio
24/11/2018
Unit 12: Software Development