How is software created? Understand the complete software development process

Software is a set of instructions used to operate a computer and perform specific tasks. While hardware refers to the physical components of a computer, software is a general term used to describe the applications, scripts, and programs that run on a device. Hearing the word “software” often raises the question: how is software created, and what does the software development process entail? Today, we will explore how software is built and the key factors to consider during its creation.

What is a computer?

Before learning about software, it is essential to understand what a computer is, as all software is designed to run on computers. In simple terms, a computer is an electronic device that accepts input, processes it, and produces output. Let’s consider an example to understand this better. Suppose you are creating a document using MS Word. Here, MS Word is the software, and you provide input via the keyboard. The computer processes this input, and the resulting output appears on the screen. You now know that a computer takes input, processes it, and generates output; however, to perform the specific task of creating a document, we require software like MS Word. This illustrates that software is necessary for us to perform tasks on a computer.

What is software?

Software is a set of instructions that enables a computer to perform specific functions. This set of instructions is also known as a program. Software running on a computer exists in the form of binary code—specifically, 0s and 1s—but writing software directly in binary is both impossible and tedious. That is why engineers created various programming languages ​​such as C++, Java, Python, and others. Sometimes, two or more languages ​​are used to build a specific piece of software. Any program can be written using a language that is understandable to someone with knowledge of programming languages; this is known as “Source Code.”

The Source Code is converted into an executable file through the process of compilation.

A developer can write a simple program within a reasonable amount of time. However, large software systems may consist of hundreds or even thousands of components. Such large software is divided into hundreds or thousands of parts. Software developers work hard on their software, but issues inevitably arise within the code; these issues are known as “bugs.” Even after a portion of the software has been released to the public, developers must continue to fix bugs and improve the software. This is why software receives periodic updates and new versions.

Proprietary and Open Source Software

Software can be created in two distinct ways: Proprietary and Open Source.

1. Proprietary Software

Proprietary software is owned by an individual or a software company and is created for commercial sale. Its source code is not released to the public; only the software itself is distributed.

2. Open Source Software

Open Source software is software where the source code is accessible to anyone. Owners of open-source software typically generate revenue through donations.

Types of Software

Now, let us discuss the different types of software.

1. Application Software

This refers to software designed to assist users with specific tasks—for example, MS Word, Firefox, etc. Application software utilizes the computer system to perform specific functions or to execute tasks that go beyond the computer’s basic operations. In modern times, the range of tasks performed on computers has expanded significantly; consequently, a wide variety of application software is being developed.

2. System Software

System software refers to software that operates on the system or computer itself. Examples include operating systems and drivers. These manage the computer’s hardware. System software—such as operating systems, device drivers, and utilities—is also designed to provide a platform for running application software.

How to create software?

Let us now look at how you can create software.

1. Determine your area of ​​interest

There are two basic types of software development, as previously mentioned: application development and system development. You must first decide what kind of software you want to create or where your interest lies.

2. Learn a programming language

Anyone can come up with new ideas or the concept of creating something new, but knowledge of a programming language is essential to turn those ideas into a program. Even if you only wish to work on the design aspects of software, you still need to be familiar with coding and capable of building prototypes. There are numerous programming languages ​​available for you to learn; here are some of the key ones:

C Language

C is one of the older languages ​​still in use today and serves as the foundation for many other languages. It is used for creating low-level programs.

C++

C serves as the foundation for C++. It is an object-oriented programming language and one of the most popular languages ​​in the world. C++ is used to create video games, and there remains a high demand for C++ developers today.

Java

Java is an evolution of the C++ language and is widely used due to its portability. It is utilized in video games and business software, and many consider it an essential language to know.

C#

C# is a Windows-based language associated with Microsoft. It shares similarities with Java and C++; if you learn Java, you can pick up C# quickly and easily.

Objective-C

Objective-C is another relative of the C language, designed specifically for Apple systems. It has been particularly popular for developing iPhone and iPad apps. It is an excellent language to learn if you are a freelancer.

Python

Python is a very easy language to learn. It is also widely used for web development.

3. Utilize Resources

Today, you can find a vast array of resources on the internet to assist you. Find guides and learn your chosen programming language on sites like Coursera, Codecademy, Back to University, Khan Academy, and W3Schools. Additionally, you can find plenty of books on e-commerce sites like Amazon. You should own well-written programming books so you can refer to them while working on software and effectively learn coding.

4. Work on projects

Before using your new programming skills to land a job in the real world or to build and launch software, work on some projects of your own. Challenge yourself to solve problems using your programming language. This will not only help develop your skills but also strengthen your resume. For instance, if you are interested in creating video games, work on a game that doesn’t require complex graphics or mechanics; instead, focus on making it fun and unique. A collection of small games created by you would look great in your portfolio.

5. Focus on building good software

A good programmer creates software that is easy and engaging for users to use. Examine the software you are working on and look for ways to simplify the development process.

6. Build a prototype

A prototype is a basic program that highlights the functions you aim to achieve. It is a quick program that undergoes modifications until you arrive at a design that works effectively. For example, if you are building a calendar program, your prototype would be a basic calendar that allows you to add events. Keep two things in mind here. First, your prototype should evolve during the software development process; as you discover new ways to solve the problem at hand, you will need to update the prototype accordingly. Second, the prototype does not need to look visually polished or beautiful. Design is one of the final stages of development; the user does not see the prototype design but interacts with the finished software.

7. Test Repeatedly

Coding errors and heavy usage can lead to various problems. These errors can only be identified and fixed through testing. Ask your family members to test the software; they can point out flaws from a user’s perspective, allowing you to make corrections. Employ various testing methods. For instance, if there is a form asking for the user’s age, try entering words instead of numbers to see what happens. If your program features a graphical interface, click on every element. Observe the system’s behavior when navigating back to a previous screen or clicking buttons out of sequence, and fix any errors you encounter.

What factors should be considered when developing software?

1. Quality and Reliability

Always pay special attention to quality when creating new software. In the case of commercial or system software, defects can lead to data loss, system crashes, and a host of other issues.

Software Testing and Bugs

A software license grants the user the right to use the software and, in the case of free software licenses, also provides other rights, such as the right to make copies. Proprietary software can be categorized into two types:

Freeware

Freeware encompasses categories such as free trial software or premium software. As the name suggests, freeware can be used at no cost. However, in the case of premium software, it is sometimes offered for use only for a limited time or with restricted functionality.

Commercial Software

The second type consists of software that is available for use upon payment of a fee. You see this on the Play Store, for instance, where some applications are free while others are paid; the same applies to software in general. Such software is often referred to as commercial software, which can be used once a license is purchased. In contrast, open-source software comes with a free software license.

Conclusion

Software is a set of instructions given to a computer that enables it to perform various tasks. Processes such as programming languages, project planning, prototyping, and testing are employed to create software. Additionally, factors like software quality, reliability, bugs, and licensing must be taken into account. Through this entire process, a simple idea is transformed into useful software.