Projec Standard Calculator Using Dot Net

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AN INTERNSHIP REPORT
ON
SCIENTIFIC CALCULATOR PROJECT
BY
Fahimuddin khan
(Tribro Softech Pvt Ltd)
Date: 12 Feb 2015 to 30 Jul 2015"0.6 Months"

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INTRODUCTION OF THE PROJECT
The project Scientific Calculator is designed to automate the calculation procedure. Making less
paper work and automate the process of calculation.
PROBLEM DEFINITION
A scientific calculator is a type of electronic calculator, usually but not always handled, designed
to calculate problems in science (especially physics),engineering, and mathematics. They have
almost completely replaced slide rules in almost all traditional applications, and are widely used
in both education and professional settings.
In certain contexts such as higher education, scientific calculators have been superseded by
graphing calculators, which offer a superset of scientific calculator functionality along with the
ability to graph input data and write and store programs for the device. There is also some
overlap with the financial calculator market.
Functions
Modern scientific calculators generally have many more features than a standard four or five-
function calculator, and the feature set differs between manufacturers and models; however, the
defining features of a scientific calculator include:
 scientific notation
 floating point arithmetic
 logarith mic functions, using both base 10 and base
 trigonometric functions(some including hyperbolic trigonometry)
 exponential functions and roots beyond the square root
 Quick access to constants
 In addition, high-end scientific calculators will include:
 hexadecimal, binary, and octal calculations, including basic Boolean math
 complex numbers
 fractions
 statistics and probability calculations
 programmability—see Programmable calculator
 equation solving
 calculus
 conversion of units
 physical constants

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While most scientific models have traditionally used a single-line display similar to traditional
pocket calculators, many of them have at the very least more digits (10 to 12), sometimes with
extra digits for the floating point exponent. A few have multi-line displays, with some recent
models from Hewlett-Packard, Texas Instruments, Casio, Sharp, and Canon using dot matrix
displays similar to those found on graphing calculators.
Uses
Scientificcalculatorsareusedwidelyinanysituationwherequickaccessto certain mathematical
functions is needed, especially those such as trigonometric functions that were once traditionally
looked up in tables; they are also used in situations requiring back-of-the-envelope calculations
of very large numbers, as in some aspects of astronomy, physics, and chemistry.
They are very often required for math classes from the junior high school level through college,
and are generally either permitted or required on many standardized tests covering math and
science subjects; as a result, many are sold into educational markets to cover this demand, and
some high-end models include features making it easier to translate the problem on a textbook
page into calculator input, from allowing explicit operator precedence using parentheses to
providing a method for the user to enter an entire problem in as it is written on the page using
simple formatting tools.
History
Thefirstscientificcalculatorthatincludedallofthebasicfeaturesabovewasthe programmable
Hewlett-PackardHP-9100A, released in 1968, though theWangLOCI-2 and some features later
identified with scientific calculator designs. The HP-9100 series was built entirely from discrete
transistor logic with no integrated circuits, and was one of the first uses of the CORDIC
algorithm for trigonometric computation in a personal computing device, as well as the first
calculator based on reverse Polish notation entry. HP became closely identified with RPN
calculators from the non, and even today some of their high- end calculators (particularly the
long-livedHP-12Cfinancial calculator and the HP-48series of graphing calculators) still offer
RPN as their default input mode due to having garnered a very large following.
TheHP-35, introduced on February 1, 1972, was Hewlett-Packard's first pocket calculator and
theworld'sfirsthandheldscientificcalculator.LikesomeofHP'sdesktopcalculatorsitusedreverse
Polish notation. Introduced at US$395, the HP-35was available from1972to 1975. HP continues
to develop and market high-end scientific calculators, like the HP-35sandHP-49series, which
have been favored by scientists and engineers, in labs, offices, as well as in the field. Texas
Instruments, after the introduction of several units with scientific notation, came out with a
handheld scientific calculator on January15, 1974 in the form of the SR-50. TI continues to be a
major player in the calculator market, with their long-runningTI-30series being one of the most
widely used scientific calculators in classrooms.

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FEASIBILITY STUDY
A feasibility study is an evaluation of a proposal designed to determine the difficulty in carrying
out a designated task. Generally, a feasibility study precedes technical development and project
implementation. In other words, a feasibility study is an evaluation or analysis of the potential
impact of a proposed project.
Five common factors (TELOS)
Technology and system feasibility
The assessment is based on an outline design of system requirements in terms of Input,
Processes, Output, Fields, Programs, and Procedures. This can be quantified inter ms of volumes
of data, trends, frequency of updating, etc. in order to estimate whether the new system will
perform adequately or not. Technological feasibility is carried out to determine whether the
company has the capability, in terms of software, hardware, personnel and expertise, to handle
the completion of the project.
Economic feasibility
Economic analysis is the most frequently used method for evaluating the effectiveness of a new
system. More commonly known as cost/benefit analysis, the procedure is to determine the
benefits and savings that are expected from a candidate system and compare them with costs. If
benefits outweigh costs, then the decision is made to design and implement the system. An
entrepreneur must accurately weigh the cost versus benefits before taking an action.
Cost Based Study: It is important to identify cost and benefit factors, which can be categorized
as follows: 1. Development costs; and 2. Operating costs. This is an analysis of the costs to be
incurred in the system and the benefits derivable out of the system.
Time Based Study: This is an analysis of the time required to achieve a return on investments.
The benefits derived from the system. The future value of a project is also a factor.
Legal feasibility
Determineswhethertheproposedsystemconflictswithlegalrequirements, e.g. a data processing
system must comply with the local Data Protection Acts.
Operational feasibility
Is a measure of how well a proposed system solves the problems, and takes advantage of the
opportunities identified during satisfies there identified in the requirements analysis phase.

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Schedule feasibility
A project will fail if it takes too long to be completed before it is useful. Typically this means
estimating how long the system will take to develop, and if it can be completed in a given time
period using some methods like payback period. Schedule feasibility is a measure of how
reasonable the project timetable is. Given our technical expertise, are the project deadlines
reasonable? Some projects are initiated with specific deadlines. You need to determine whether
the deadlines are mandatory or desirable...
Other feasibility factors
Market and real estate feasibility
Market Feasibility Study typically involves testing geographic locations for a real estate
development project, and usually involves parcels of real estate land. Developers often conduct
market studies to determine the best location within a jurisdiction, and to test alternative land
uses for given parcels. Jurisdictions often require developers to complete feasibility studies
before they will approve a permit application for retail, commercial, industrial, manufacturing,
housing, office or mixed-use project. Market Feasibility takes into account the importance of the
business in the selected area.
Resource feasibility
This involves questions such as how much time is available to build the new system, when it can
be built, whether it interferes with normal business operations, type and amount of resources
required, dependencies, etc. Contingency and mitigation plans should also be stated here.
Cultural feasibility
In this stage, the project's alternatives are evaluated for their impact on the local and general
culture. For example, environmental factors need to be considered and these factors are to be
well known. Further an enterprise's own culture can clash with the results of the project.

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Output
The feasibility study outputs the feasibility study report, a report detailing the evaluation criteria,
the study findings, and the recommendations.
Software Specification
 FrontEnd:VisualBasic6.0
 Back End: Microsoft Access 2003

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DATA FLOW DIAGRAM
Data flow diagram example.
A data flow diagram (DFD) is a graphical representation of the "flow" of data through an
information system, model its process aspects. Often they are a preliminary step used to create
an over view of the system which can later be elaborated . DFD scan so be used for the
visualization of data processing (structured design).
A DFD shows what kinds of data will be input to and output from the system, where the data
will come from and go to, and where the data will be stored. It does not show information about
the timing of processes, or information about whether processes will operate in sequence or in
parallel (which is shown on a flowchart).

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Overview
Data flow diagram example.
It is common practice to draw the context-level data flow diagram first, which shows the
interaction between the system and external agents which act as data sources and data sinks. On
the context diagram the system's interactions with the outside world are modeled purely inter ms
of data flows across the system boundary. The context diagram shows the entire system as a
single process, and gives no clues as to its internal organization.
This context-level DFD is next "exploded", to produce a Level 0 DFD that shows some of the
detail of the system being modeled. The Level0 DFD shows how the system is divided into sub-
systems (processes), each of which deals with one or more of the data flows to or from an
external agent, and which together provide all of the functionality of the system as a whole. It
also identifies internal data stores that must be present in order for the system to do its job, and
shows the flow of data between the various parts of the system.

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Data flow diagrams were proposed by Larry Constantine, the original developer of structured
design, based on Martin "data flow graph" model of computation.
Data flow diagrams (DFDs) are one of the three essential perspectives of the structured-systems
analysis and design method SSADM.
brief and consulted throughout all stages of a system's evolution. With a data flow diagram, users
are able to visualize how the system will operate, what the system will accomplish, and how the
system will be implemented. The old system's dataflow diagrams can be drawn up and compared
with the new system's data flow diagrams to draw comparisons to implement a more efficient
system. Data flow diagrams can be used to provide the end user with a physical idea of where
the data they input ultimately has an effect upon the structure of the whole system from order to
dispatch to report. How any system is developed can be determined through a data flow diagram.
In the course of developing a set of leveled data flow diagrams the analyst/designers is forced to
address how the system may be decomposed into component sub-systems, and to identify the
transaction data in the data model.
There are different notations to draw data flow diagrams (Yourdon & Co), defining different
visual representations for processes, data stores, data flow, and external entities.

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DATA DICTIONARY
A data dictionary, or meta data repository, as defined in the IBM Dictionary of Computing, is a
"centralized repository of information about data such as meaning, relationships to other data,
origin, usage, and format."The term may have one of several closely related meanings pertaining
to databases and database management systems (DBMS):
A document describing a database or collection of databases
An integral component of a DBMS that is required to determine its structure
A piece of middleware that extends or supplants the native data dictionary of a DBMS
Documentation
The term Data Dictionary and Data Repository are used to indicate a more general software
utility than a catalogue. A Catalogue is closely coupled with the DBMS Software; it provides the
information stored in it to user and the DBA, but it is mainly accessed by the various software
modules of the DBMS itself, such as DDL and DML compilers, the query optimizer , the
transaction processor, report generators, and the constraint enforcer. On the other hand, a Data
Dictionary is a data structure that stores meta-data, i.e., data about data. The Software package
for a stand-alone Data Dictionary or Data Repository may interact with the software modules of
the DBMS, but it is mainly used by the Designers, Users and Administrators of a computer
system for information resource management. These systems are used to maintain information
on system hardware and software configuration, documentation, application and users as well as
other information relevant to system administration.
If a data dictionary system is used only by the designers, users, and administrators and not by the
DBMS Software , it is called a Passive Data Dictionary; otherwise, it is called an Active Data
Dictionary or Data Dictionary. An Active Data Dictionary is automatically updated as changes
occur in the database. A Passive Data Dictionary must be manually updated.
The data Dictionary consists of record types (tables) created in the database by systems
generated command files, tailored for each supported back-end DBMS. Command files contain
SQL Statements for CREATE TABLE,CREATE UNIQUE INDEX,ALTER TABLE(for
Referential integrity),etc, using the specific statement required by that type of database.
Data base users and application developers can benefit from an authoritative data dictionary
document that catalogs the organization, contents, and conventions of one or more databases.
This typically includes the names and descriptions of various tables and fields in each database,
plus additional details, like the type and length of each data element. There is no universal
standard as to the level of detail in such a document, but it is primarily a weak kind of data.

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ENTITY-RELATIONSHIP MODEL
A sample Entity-relationship diagram using Chen's notation
In software engineering, an entity-relationship model(ERM) is an abstract and conceptual
representation of data. Entity-relationship modeling is a database modeling method, used to
produce a type of conceptual schema or semantic data model of a system, often are lational
database, and its requirements in a top-down fashion. Diagrams created by this process are called
entity-relationship diagrams, ER diagrams, or ERDs.
This article refers to the techniques proposed in Peter Chen's 1976 paper. However, variants of
the idea existed previously, and have been devised subsequently.
Overview
The first stage of information system design uses these models during the requirements analysis
to describe information needs or the type of information that is to be stored in a database. The
data modeling technique can be used to describe any on to logy (i.e. an overview and
classifications of used terms and their relationships) for a certain area of interest. In the case of
the design of an information system that is based on a database, the conceptual data model is, at
a later stage(usually called logical design),mapped to a logical data model, such as the relational
model; this in turn is mapped to a physical model during physical design. Note that sometimes,
both of these phases are referred to as "physical design".

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SYSTEM PHYSICAL DESIGN

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Calc.frm
CODING
Public no1As Double,no2 As Double, Which No As Boolean, Dot As Boolean, op As String,
answer As Double, Dot Val As Long
Sub text value(num As Long)
On Error Go To Over Flow Error If (Not Which No) Then
If(Dot)Then
Dot Val=DotVal+1 temp = num
For i = 1 To Dot Val temp=(temp/ 10)
Next
no1=no1+temp Else
temp = no1 * 10 no1=temp +num
End If Text1.Text=no1
Else
If(Dot)Then
Dot Val=DotVal+1 temp = num
For i = 1 To Dot Val temp=(temp/ 10)

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Next
no2=no2+temp Else
temp = no2 * 10 no2=temp +num
End If Text1.Text=no2
End If txtNO1.Text=no1 txtNO2.Text=no2 txt OP. Text = op
Txt ANS. Text=answer Exit Sub
Ovr Flow Error:
Mug Box" Over flow occurred ! "& Chr (13)&"Please restart your job." ,vb Exclamation, "Error
– A me Calculator"
End Sub Sub calc()
On Error Go To arith error Select Case op
Case"+"
answer=(no1+no2) Case "-"
answer=(no1-no2) Case "*"

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answer=(no1*no2) Case "/"
answer=(no1/no2) Case "%"
'answer=(no1%no2) Case "&"
answer=(no1&no2) Case "|"
answer=(no1&no2) Case "~"
answer=(Notno1) Case "sin"
answer=(Sin(no1)) Case "cos"
answer=(Cos(no1)) Case "tan"
answer=(Tan(no1)) Case "cosec"
answer=(1/Sin(no1)) Case "sec"
answer=(1/Cos(no1)) Case "cot"
answer=(1/Tan(no1)) Case "ln"
answer=(Log(no1))

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Case "log"
answer=(Log(no1)/2.30258509299405) Case "^"
answer=(no1^no2) Case "!"
answer=1
For i = 2 To no1 answer=answer*i
Next End Select
Txt OP. Text = "" Which No = False Text1.Text = answer txtNO1.Text = no1 txtNO2.Text =
no2 txt OP. Text = op txt ANS. Text=answer no1 = answer
Exit Sub arith error:
Mug Box "Arithmetic error occurred .Possibly Overflow."& Chr (13)&"Please restart your job.",
vb Exclamation, "Error - Ameya's Calculator"
End Sub
Private Sub error(error no As Long) Select Case error no

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Case1
Msg Box"Divide by zero error!" Case 2
Msg Box" Operator Over flow!" End Select
End Sub
Private Sub about_ Click () frm About. Show
End Sub
PrivateSubbtn1_Click() text value (1)
End Sub
EndSub
EndSub
EndSub

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End Sub
End Sub
End Sub
End Sub
End Sub
End Sub
Private Sub btn ADD_ Click() op = "+"
Which No=True Text1.Text = "" Dot Val = 0
Dot=False no2 = 0
End Sub
Private Sub btn SUB_ Click()

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op = "-" Which No=True Text1.Text = "" Dot Val = 0
Dot=False no2 = 0
End Sub
Private Sub btn MUL_ Click() op = "*"
Dot=False no2 = 0
End Sub
Private Sub btn DIV_ Click() op = "/"
Dot=False no2 = 0
End Sub
Private Sub btn AND_ Click() op = "&"

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Dot=False End Sub
Private Sub btn OR_ Click() op = "|"
Dot=False End Sub
Private Sub btn MOD_ Click() op = "%"
Dot=False End Sub
Private Sub btn NOT_ Click() op = "~"
Dot=False

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Calc End Sub
Private Sub btn SIN_Click () op = ""
If( chk INV. Value =1)Then op = "a"
End If
op=op&"sin"
If(chk HYP. Value=1)Then op = op &"h"
End If Dot Val= 0 Dot=False calc
End Sub
Private Sub btn COS_ Click() op = ""
If(chk INV. Value=1)Then op = "a"
End If
op=op&"cos"
End If Dot Val=0

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Dot=False calc
End Sub
Private Sub btn TAN_ Click() op = ""
If(chk INV .Value=1)Then op = "a"
End If
op=op &"tan"
If(chk HYP .Value=1)Then op = op &"h"
End If Dot Val= 0 Dot=False calc
End Sub
Private Sub btn COSEC_ Click() op = ""
If(chk INV. Value=1)Then op = "a"
End If
op=op&"cosec"
End If

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Dot Val= 0 Dot=False calc
End Sub
Private Sub btn SEC_ Click() op = ""
If (chk INV. Value=1)Then op = "a"
End If
op=op&"sec"
If (chk HYP. Value=1)Then op = op &"h"
End If Text1.Text="" Dot Val = 0
Dot=False calc
End Sub
Private Sub btn COT_ Click() op = ""
If ( chk INV. Value=1)Then op = "a"
End If
op=op&"cot"
If( chk HYP. Value =1)Then

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op=op&"h" End If Text1.Text = "" Dot Val = 0
Dot=False calc
End Sub
Private Sub btn LN_ Click() If (no1 <= 0) Then
Mug Box("logarithmisonlydefinedforpositivenumbers."&Chr(13)&"Pleaseentera valid no and
then take logarithm.")
Else
op = "ln" Text1.Text="" Dot Val = 0
Dot=False calc
End If End Sub
Private Sub btn LOG _Click() If (no1 <= 0) Then
Mug Box("logarithmisonlydefinedforpositivenumbers."&Chr(13)&"Pleaseentera valid no and
then take logarithm.")
Else
op = "log" Text1.Text=""

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End If End Sub
Private Sub btn POW_ Click() op = "^"
Dot=False End Sub
PrivateSubbtnPOW2_Click() op = "^"
no2 = 2 Text1.Text="" DotVal = 0
Dot=False calc
End Sub
PrivateSubbtnPOW3_Click() op = "^"
no2 = 3 Text1.Text="" Dot Val = 0

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Dot=False calc
End Sub
Private Sub btn INV_ Click() op = "^"
no2 = -1 Text1.Text="" Dot Val = 0
Dot=False calc
End Sub
Private Sub btn FACTORIAL_ Click() op = "!"
Text1.Text="" Dot Val = 0
Dot=False calc
End Sub
Private Sub btn SQRT_ Click() If (no1 < 0) Then
MsgBox("Square Root is not defined for negative numbers.")
Else
op = "^" no2=0.5
Text1.Text=""

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End If End Sub
Private Sub btn EXP_ Click() op = "^"
no2=no1
no1=2.30258509299405
Dot=False calc
End Sub
Private Sub btn PI_ Click()
If(Not Which No)Then
no1=3.14159265358979
Else
no2=3.14159265358979
End If
Text1.Text="3.14159265358979"
Dot Val= 0 Dot=False
End Sub
Private Sub btn C_ Click()

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no1=0
no2=0
answer =0
Text1.Text="0" op = ""
Dot Val= 0 Dot=False
Which No = False txtNO1.Text = no1 txtNO2.Text = no2 txt OP .Text = op txt ANS.
Text=answer
End Sub
Private Sub btn CE_ Click()
If(temp)Then no1 = 0
Else
no2=0 End If
Dot=False End Sub
Private Sub btn bksp _Click() If (Not Which No) Then

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If (Len(Str(no1))>1)Then
no1=Format Number (Left(Str(no1),Len(Text1.Text)-1)) Text1.Text = no1
End If Else
If (Len (Str (no2))>0)Then
no2=Format Number (Left(Str(no2),Len(Text1.Text)-1)) Text1.Text = no2
End If End If
If (Dot Val> 0) Then Dot Val= ditval-1
Txt ANS. Text=answer End Sub
Private Sub btn DOT_ Click() If (Dot = False) Then
Dot=True
Text1.Text=Text1.Text&"." Dot Val = 0
End If End Sub

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Private Sub btn Equal_ Click() calc
no1 = answer Which No=False Dot Val = 0
Dot=False End Sub
PrivateSubCommand2_Click()
Msg Box("Temp="& Str (temp) &"No1="& Str (no1)&"No2="& Str (no2)&"op="&op) End
Sub
Private Sub copy_ Click() Clip board. Set Text (Text1.Text)
EndSub
Private Sub cut_ Click() Clip board. Set Text (Text1.Text) Text1.Text = ""
End Sub
Private Sub exit_ Click() Unload Me
End Sub
Private Sub Form_ Load()
Dimno1,no2,op,WhichNo,Dot,temp no1 = 0
no2=0
answer=0

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Dot = False Dot Val = 0 Which No=False btn C_ Click
End Sub
Private Sub help topic_ Click()
Mug Box("No help found."& Chr (13)&"We are SORRY for the inconvenience!") End Sub
PrivateSubText1_KeyUp (Key Code As Integer, Shift As Integer) If (Is Numeric(Text1.Text))
Then
If(Not Which No)Then
no1=Format Number(Text1.Text)
Else
no2=Format Number(Text1.Text) End If
Txt ANS. Text=answer End Sub

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Frmabout.frm
Option Explicit
'Re g Key Security Options...
Const READ_CONTROL=&H20000 Const KEY_QUERY_VALUE=&H1
Const KEY_SET_VALUE=&H2
Const KEY_CREATE_SUB_KEY=&H4
Const KEY_ENUMERATE_SUB_KEYS=&H8 Const KEY_NOTIFY = &H10
Const KEY_CREATE_LINK=&H20
Const KEY_ALL_ACCESS = KEY_QUERY_VALUE + KEY_SET_VALUE + _
KEY_CREATE_SUB_KEY+KEY_ENUMERATE_SUB_KEYS+_ KEY_NOTIFY +
KEY_CREATE_LINK + READ_CONTROL
Re g Key ROOT Types...
Const HKEY_LOCAL_MACHINE=&H80000002 Const ERROR_SUCCESS = 0
Const REG_SZ = 1 'Unicode nul terminated string Const REG_DWORD = 4 ' 32-bit
number
Const REGKEYSYSINFOLOC="SOFTWAREMicrosoftShared Tools Location" Const
REGVALSYSINFOLOC = "MSINFO"
Const REGKEYSYSINFO="SOFTWAREMicrosoftShared ToolsMSINFO" Const g
REGVALSYSINFO = "PATH"

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Private Sub cmd Sys Info_Click() Call Start Sys Info
End Sub
PrivateSubcmdOK_Click() Unload Me
EndSub
PrivateSubForm_Load()
Me.Caption="About"&App.Title
'lblVersion.Caption="Version"&App.Major&"."&App.Minor&"."&App.Revision
lblTitle.Caption = App.Title
EndSub
PublicSubStartSysInfo()
OnErrorGoTo SysInfoErr
DimrcAsLong

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DimSysInfoPathAsString
'TryToGetSystemInfoProgramPathName FromRegistry...
IfGetKeyValue(HKEY_LOCAL_MACHINE,gREGKEYSYSINFO,gREGVALSYSINFO,
SysInfoPath) Then
'TryToGetSystemInfoProgramPathOnlyFromRegistry...
ElseIf GetKeyValue(HKEY_LOCAL_MACHINE, gREGKEYSYSINFOLOC,
gREGVALSYSINFOLOC,SysInfoPath)Then
'ValidateExistanceOfKnown32BitFile Version
If(Dir(SysInfoPath&"MSINFO32.EXE")<>"")Then SysInfoPath = SysInfoPath &"
MSINFO32.EXE"
'Error-FileCanNotBeFound... Else
GoToSysInfoErr End If
'Error-RegistryEntryCanNot BeFound... Else
GoToSysInfoErr End If
CallShell(SysInfoPath,vbNormalFocus)
Exit Sub SysInfoErr:
MsgBox"SystemInformationIsUnavailableAtThisTime",vbOKOnly

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EndSub
Public Function GetKeyValue(KeyRoot As Long,KeyNameAs String,SubKeyRef As String,
ByRef KeyVal As String) As Boolean
DimiAsLong 'Loop Counter
DimrcAsLong'Return Code
DimhKeyAsLong 'HandleToAnOpenRegistryKey
DimhDepthAsLong '
DimKeyValTypeAs Long 'DataTypeOfARegistryKey
Dim tmpVal As String 'TemporyStorageForARegistryKeyValue Dim KeyValSize As
Long ' Size Of Registry Key Variable
'
'OpenRegKeyUnderKeyRoot{HKEY_LOCAL_MACHINE...} '
If(rc<>ERROR_SUCCESS)ThenGoToGetKeyError 'HandleError...
tmpVal=String$(1024,0)'AllocateVariable Space
KeyValSize=1024 'MarkVariableSize
'RetrieveRegistryKeyValue... '
rc=RegQueryValueEx(hKey,SubKeyRef,0,

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KeyValType,tmpVal, KeyValSize) 'Get/CreateKeyValue
If(rc<>ERROR_SUCCESS)ThenGoToGetKeyError 'HandleErrors
If (Asc(Mid(tmpVal, KeyValSize, 1)) = 0) Then 'Win95AddsNullTerminatedString...
tmpVal = Left(tmpVal, KeyValSize - 1) ' Null Found, Extract From String
Else ' WinNT Does NOT Null Terminate String... tmpVal = Left(tmpVal, KeyValSize)
'NullNotFound,ExtractStringOnly
EndIf '
'DetermineKeyValueTypeForConversion... '
SelectCaseKeyValType 'SearchDataTypes...
Case REG_SZ 'StringRegistryKeyDataType KeyVal = tmpVal ' Copy String
Value
Case REG_DWORD 'DoubleWordRegistryKeyDataType For i = Len(tmpVal) To 1 Step -1
' Convert Each Bit
KeyVal=KeyVal+Hex(Asc(Mid(tmpVal,i,1)))'Build ValueChar.ByChar.
Next
KeyVal = Format$("&h" + KeyVal) 'ConvertDoubleWordToString End Select
GetKeyValue=True 'ReturnSuccess
rc = RegCloseKey(hKey) 'CloseRegistryKey Exit Function ' Exit

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GetKeyError: 'CleanupAfterAnError HasOccured...
KeyVal = "" 'SetReturnValToEmptyString GetKeyValue = False ' Return Failure
rc = RegCloseKey(hKey) 'CloseRegistryKey End Function

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FRMSPLASH.FRM
Option Explicit PubliciAsLong
PrivateSubForm_KeyPress(KeyAsciiAsInteger) Unload Me
EndSub
PrivateSubForm_Load() i = 0
lblVersion.Caption="Version"&App.Major&"."&App.Minor&"."&App.Revision
'lblProductName.Caption = App.Title
Form1.Show End Sub
PrivateSubFrame1_Click() Unload Me
EndSub
PrivateSubText1_Change()
EndSub
PrivateSublblCompanyProduct_Click()

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EndSub
PrivateSubTimer1_Timer()
If(i<10)Then i = i + 1
Shape1.Width=(i)*300
Label2.Caption=Str(((i+1)*10) -10)&"%" End If
If(i>=10)Then i = i + 1
EndIf
If(i>20)Then Unload Me
EndIf EndSub

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SYSTEM TESTING
System testing of software or hardware is testing conducted on a complete, integrated system to
evaluate the system's compliance with its specified requirements. System testing falls within the
scope of black box testing, and as such, should require no knowledge of the inner design of the
code or logic.
As a rule, system testing takes, as its input, all of the "integrated" software components that have
successfully passed integration testing and also the software system itself integrated with any
applicable hardware system(s). The purpose of integration testing is to detect any in
consistencies between the software units that are integrated together (called assemblages) or
between any of the assemblages and the hardware. System testing is a more limited type of
testing; it seeks to detect defects both within the "inter-assemblages" and also within the system
as a whole.
Testing the whole system
System testing is performed on the entire system in the context of a Functional Requirement
Specification(s) (FRS) and/or a System Requirement Specification (SRS). System testing tests
not only the design, but also the believed expectations of the customer. It is also intended to test
up to and beyond the bounds defined in the software/hardware requirements specification.
Types of tests to include in system testing
The following examples are different types of testing that should be considered during System
testing:
 Graphical user interface testing
 Usability testing
 Performance testing
 Compatibility testing
 Error handling testing
 Load testing
 Volume testing
 Stress testing
 Security testing
 Scalability testing
 Sanity testing
 Smoke testing
 Exploratory testing

LIMITATION AND FUTURE SCOPE
This software has limited functionality like
 Single user
 Cannot be implemented on networks.
 No login screens.
This software has lot future scope like
 Multiuser
 Implementation on network

Projec Standard Calculator Using Dot Net

Projec Standard Calculator Using Dot Net

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