Software Engineering basics - Dual Role of Software

The term "dual role of software" means that software plays two main roles in computer systems:

1. Product Role (What the User Sees and Uses)

• In this role, software is the final product delivered to the customer or user.

• It performs specific tasks like sending emails, editing photos, managing school records, or playing music.

Examples:

• MS Word (used to write documents)

• WhatsApp (used for messaging)

• A school attendance app

In short:

Software as a product is what people use to get things done.

2. Vehicle for Delivering a Solution (Behind the Scenes)

• In this role, software acts as a tool to solve a problem or automate a process.

• It can be part of a larger system (like a robot, ATM, or traffic signal system).

• It tells the hardware what to do and how to do it.

Examples:

• Software in an ATM that controls money withdrawal

• Software in a hospital system that manages patient records

• Software in a robot that helps in manufacturing

In short:

Software as a vehicle helps deliver a solution or service.