Global Description to use this Tutorial  

Main subject of Engineering Software in general, describe the basics of Software Engineering, and solving problems, and methods of software development. The discussion about the sub-field of Operating System contains a computer system, the system operating and working in the computer network. The scope of the material basic algorithms include algorithms and advance algorithms. Sub field Programming Languages take a big portion, including GUI programming with VB & VB.Net, Java programming, C + + programming, Programming of object-oriented and web-based. Sub-sector which is the last part of this tutorial is a data base with the scope of the system databases, conceptual modeling, relational database, Microsoft Access and SQL.

This tutorial is structured in such a way so that for general readers can independently learn and encourage to try. Therefore, in this book, many will be found either in the form of illustration image, the scheme and program listings.

CHAPTER 1 INTRODUCTION



Let us see Picture 1,1. For most users, the above picture is fairly familiar. In the picture, the desktop of Microsoft Windows operating system is shown. Several icons is shown in the picture. Double clicking on the icon will open a certain software application that can be used to do a certain task.

These days almost all aspects of life were touched by the use of software. Some software may already been used or seen by us, such as, music

player, cashier application software, document editor, etc. These softwares were the results of a series of process or the activity that was known as the Software Engineering. What is Software Engineering? This chapter

will try to answer such question.

OBJECTIVES

This chapter should enable you to:

Able to explain on software, program, software engineering and procedures. Understand the objectives of software engineering. Understand the scope of software engineering. Understand the position of the software engineering field in the discipline of computer science and its connection with the other fields. Knows the development in software engineering. Known the profession and certification in the software engineering field. Explained solution principles to the problems in the software engineering. Directorate Technical Vocational Education

1.1 SOFTWARE ENGINEERING CONCEPT

The Software Engineering term began to be popularized in 1968 at Software Engineering Conference that was held by NATO. Some people interpret Software Engineering to be limited on how to made a computer program. In fact, there are basic differences between software and computer program.

Software is all the command that can be used to process information. Software could take the form of the program or the procedure. The program was the collection ordered that was understood by the computer whereas the procedure was the order that was needed by the user in processing information (O?fBrien, 1999).

A body of knowledge that discussed all the aspects of the production of software, starting from the early stage that is the analysis of the requirement for the user, determined the specification from the requirement for the user, the design, coding, the testing to the maintenance of the system after being used.

It is clear that Software Engineering is not only related to the production method of the computer program. The statement ?gall aspects of production?h in the above definition, has the meaning of all the matters that are connected with the process of the production like project management, the determination of the personnel, the budget of the cost, the method, the schedule, the quality up to the training of the user was a part of Software Engineering.

1.2 SOFTWARE ENGINEERING OBJECTIVES



In general, software engineering objectives are fairly similar to other engineering fields. Let us examine Figure 1.2.

Figure 1.2 shows that an engineering field will always try to produce the highest

performance output at the lowest possible cost at exact time. The software engineering aims for,

Lower software production cost. High performance and reliable software in time. Multi platform software. Low maintenance cost.

1.3 SCOPE



As defined above, the scope of software engineering is as follows,

Software requirements related to the requirement specifications of the software. Software design includes software architecture determination, software components, interface, as well as other software characteristics. Software construction relates to the software development, including the algorithm, coding, testing, and debugging. Software testing covers software behavior evaluation and testing. Software maintenance Includes maintenance efforts as software is operated. Software configuration management is related to the configuration of software

to satisfy a certain requirement. Software engineering management related to the management and the grating

software engineering, including planning of the software project. Software engineering tools and methods include the theoretical study on aids

and the software engineering method. Software engineering process is concerned with the definition, the implementation, the grating, the management, the change and the improvement of the process software engineering. Software quality is stressed on the quality and the software life-cycle.

1.4 SOFTWARE ENGINEERING AND COMPUTER SCIENCE

Computer Science was born at the beginning of the 1940 's that was the integration from the theory of the algorithm, mathematical logic and the discovery of the storage method of the program electronically to the computer. Since then computer science had experienced continuous development and broadening.

The scope of knowledge in computer science often described as a

systematic study in processes of the algorithm that explained and

transformed information (Denning, 2000). It includes the theory, the

analysis, the design, efficiency, the application and it application.

There are several branch of knowledge in the computer science discipline as seen in the Figure 1.4, 1.5 and 1.6.

Based on Denning's (2000) and Wikipedia's

(2007), software engineering was the subsector of computer science that was equal to the other subsector. Whereas according to ACM (Association for Computing Machinery), software engineering is part of Section D (Software). Although being seen separated, in its application, the subsector software engineering always needed the support from the other subsector, especially algorithm and data structure, programming language, database, operating  system and network, and information system.

1.5 SOFWARE ENGINEERING AND OTHER DISCIPLINE

Since the scope of software engineering is quite wide, it relies heavily to other fields.

Not only with other sub sector in computer science but also other fields outside computer science. Software engineering relations with other fields

can be seen in Figure 1,7.

Management field covers accounting, financial, marketing, operation management, economics, quantitative analysis, human resources management, policy and business strategy. mathematical field covers linear algebra, calculus, probabilistic, statistics, numerical analysis and discreet mathematics. Project management field covers project related matters, such as, project scope, budgeting, human resource, quality control, risk management, and project scheduling. Quality management field covers quality system development, risk and reliability management, quality improvement, and quantitative methods. Ergonomics field covers man and machine interaction. System engineering covers system theory, cost analysis, modeling, simulation, business process and operation.

1.6 PROFESSION AND CERTIFICATION

Software Engineer profession is fairly new for Indonesians. Most Indonesians possibly more familiar with the term Information Technology expert, Information System Analyst, Operator or the other term. It is due to the confusion on the term software engineer as described in the early of the chapter. However in countries with mature information technology, Software Engineer term is more often used.

Software engineer certification is still debatable among expert and software vendor. Most certification in software industry is usually product specific. For example, the software company like Redhat Linux Inc., Adobe Inc., Oracle, or Microsoft, give certification to those who master their product.

ACM (Association for Computing Machinery) had run Software Engineer certification program in the 1980. Unfortunately, they have to discontinue due to lack of interest.

IEEE (Institute of Electrical and Electronics Engineers) has Issued more than 500 certificates of software profession. Canada has issued a legal certificate for software engineer that was known as ISP (Information Systems Professional).

At this time, there is no software engineer certification in Indonesia. However, the National Competence for Computer Programmer has been defined. Although, it has not fully covered computer programmer field, it can be used for early approach to software engineer certification.

1.7 SOFTWARE ENGINEERING AND PROBLEM SOLVING

Software engineering had conceptually close to problem solving principles. Understanding on the problems, the strategy and the process as well as the system approach in the solution to the problem will help the software engineering processes.

1.7.1 The Problem and The Symptom, A problem can be seen as the difference between the condition that happened and the condition that it was hoped. It might also be interpreted as the difference between the condition now and the aimed condition. For example, a student hoped to receive 80 in a C++ Programming exam, but in fact he only received 60. The existence of this difference showed the existence of a problem.

Often it is difficulty to distinguish between the symptom and the problem. The symptom is a sign of the occurrence of a problem. 1.7.2. Type of Problem

Problem in standard fulfillment. The problem in this group is related to the achievement of the standard that was determined in an organization. It usually relates to the long term objectives of the organization. 

Problem in alternative selection. The problem in this group is in choosing the best solution from various alternatives based on certain criteria. This problem is often encountered in daily life, such as, choose the exact school, choose the residence location, choose field of work. The alternative and the criterion had the weight that was agreed to.

Problem in customer's satisfaction fulfillment. In profit oriented organizations, problem in customer's satisfaction fulfillment is often emerged. The customers may have many wishes and one may be highly different than others. Fulfill all customer's wishes may not possible and very incriminating an organization. One must look for the solution that benefit both the customer and the organization.

The problem in goal achievement. This type of problem resembles the first type of problem, problem in standard fulfillment. The difference, this type of problem is in achieving short term goals that might not be fixed can be altered in a short time. 1.7.3. Problem Solving

Problem solving is a process where a situation was observed and after the problem found, a solution is made by determining the problem, reducing or eliminating the problem or preventing the problem from happening.

to be continued



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The importance of CASS Software in Business Mailing

CASS Software enables the Post Offices to handle the mails more efficiently and quickly. Coding Accuracy Support System, popularly known as CASS actually evaluates the accuracy and correctness of the addresses and is also used to rectify and match addresses. In the process of CASS certification, the address zip is matched with the United States Postal Service (USPS) master list. It also helps in fixing incorrect addresses.

This programming not only standardizes and corrects addresses, but it completes the incomplete address. In certain addresses the state's name is missing or the zip code is missing. This software with the help of its matching function helps in adding all the missing information thus completing the address. Postal services are also benefited with the help of certification as correct addresses help them save money in terms of time and manpower. The volume of unsorted and non deliverable mail is greatly reduced.

Postal Services often offer discounts to mailers who use CASSsoftware for their mailing addresses. They offer these discounts because their handling time for your mail which is certified is reduced to a great extent. With the certified mail the 9 digit zip codes are correctly and accurately represented in the bar codes and the United States Postal Service readily accepts your barcodes as accurate once you show them that you have matched it with their masters list of 9 digit zip code. Although they may not insist on a report that proves that you have performed CASS certification run for zip plus 4 check on your mailers, still it is advisable to store this report properly in case of future reference.

Business mailing are much benefited with the programming of the best mailers having correct and accurate bar codes attract a percentage of discounts in the postal charges thus resulting in savings in administrative expenses of your business. For availing the discounts, you need to put in some efforts so that accurate 9 digit zip codes are used in your addresses.

Not only is this software important because it helps in savings of postal charges but more importantly it ensures that your letters and mailers reach your addressees correctly in time. In business, communication is very important, and if it is an important communication you may lose a fortune if it is not delivered promptly. For Marketing and advertisement mailers, it is also important that they reach the prospective buyers promptly otherwise the purpose of those mailers will be defeated.

Another important factor that can't be overlooked is that the clients feel good about their company looking after them and keeping track of them. It increases customer loyalty in the long term and has long term benefits.

It is worthwhile to invest in solutions like CASS software as in business organizations where there is regular bulk mailing it saves lot of efforts on part of employees and ensures efficient delivery. Benefits and savings add up quickly with the help of this programming and the promptness of delivery is also very high. Try it today if you have not already.



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Two decades ago educational software was a luxury item which most schools did not want to incur the cost of. In the twenty-first century it is just an normal routine element of the teaching resources encountered in all schools. In those years many new packages of children's educational software have been introduced as the next indispensable resource for schools, only to disappear into oblivion within a couple of years.

A minute proportion of education software packages have been successfully integrated into the classroom in the longer term, but Aspex has created educational software which is still in daily use after ten or fifteen years! That is because our software helps pupils to enjoy themselves and at the same time acquire and improve skills which are vital in the twenty-first century. Skills such as controlling a mouse, moving and handling on-screen graphics, budgeting money, and generating ideas for designs, all of which are fast becoming essential abilities in everyday life today.

Survival in this ever changing world, at various historical times and in diverse cultural settings, requires vastly different sets of skills and knowledge. Survival in the wilderness, as Bear Grylls regularly shows us on TV, requires abilities such as rubbing sticks together to create a spark and start a fire, and knowing which plants have roots you can eat and which roots are poisonous. But such knowledge is utterly irrelevant if you are having dinner at the Savoy Grill, for that the required knowledge is how to read the menu, which knives and forks to use for which course and how to employ them!

Children's learning is at least to some degree a process of acquiring survival skills, and at any single time and place there is a consensus on what children should be taught. Thus, well-born young women in Victorian England were taught to be lady-like, and encouraged to practise their skills in watercolour painting, playing an instrument, singing, reciting and embroidery. These were what they needed to know to acquire a husband of the right type eg RICH!

To be interested in science, Chemistry or Mathematics was regarded as quite unseemly for a Lady and therefore girls were never taught these subjects. My school life started in the late 1950's, when most cars were still painted black, and instead of having fun with woodwork girls had to sit quietly and do needlework. I can also remember we were given a chalkboard and a stick of chalk for writing lessons when I attended, (and I haven't got my bus pass yet!). What a massive technological jump has happened in the classroom since then! In the twenty-first century the first thing a child is faced with in the classroom is the omnipresent school computer with all its possibilities, kids educational software programs, school websites and a plethora of resources.

These days children don't just learn to write, they even publish their own books! Computers and IT have become foundational to our children's lives and learning whether they are at school or at home. However what they can learn by using the computer is dependent on good quality software and web-based content. Much research and consideration have gone into our Kids educational software products which has resulted in four genuinely content-free, open ended, cross-curricular design software packages for children, Spex for designing rooms in a house, Spexworlds! which is a dream to design a house and other places, tabs for 3D shapes, nets and modeling, and Shapes and Nets a program for children to investigate 2D shapes and 3D shapes.

Our educational software programs inspire children to use their own creativity to make a personal and unique design, perhaps a kitchen layout or a model of a rocket. Meanwhile the learning element just happens while children are having fun! All the educational software mentioned in this article can be found at http://www.aspexsoftware.com



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