3. Merit and Demerits of computers

3.1. computer software

Definition:

Computer software refers to the programs, data, and instructions that tell a computer what to do and how to do it.
It is not physical — you cannot touch or see it directly, but it controls how hardware works.

Types of Computer Software

1. System Software

  • Helps to run and control the computer hardware.

  • Acts as a bridge between the user and hardware.

  • 🧠 Examples:

    • Operating Systems (Windows, macOS, Linux)

    • Utility Programs (antivirus, disk cleanup tools, backup software)

    • Device Drivers

2. Application Software

  • Designed to perform specific user tasks.

  • 🧠 Examples:

    • Microsoft Word → for typing documents

    • Excel → for calculations

    • Photoshop → for image editing

    • Web browsers → for internet access

3. Programming Software

  • Used by programmers to create other software.

  • Provides tools for writing, testing, and debugging code.

  • 🧠 Examples:

    • Programming Languages (Python, C++, Java)

    • Code Editors (VS Code, Notepad++)

    • Compilers and Interpreters