Chapter 3 of 29
Revision Notes
Computer Software — Revision Notes
NIOS · Class 12 · Computer Science
Computer Software revision notes for NIOS Class 12 Computer Science: 4 topics in quick points. Part of the NIOS Class 12 Computer Science syllabus.
43 questions25 flashcards5 concepts
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Key Topics to Revise
1
What is Software?
- Software is a complete set of instructions written to solve a problem on a computer.
- Software causes the hardware to function in the desired manner.
- Without software, hardware cannot perform any calculation, comparison, or manipulation.
2
System Software
- System software consists of pre-written programs supplied by the manufacturer with the computer.
- Primary objectives: (1) enhance efficiency of hardware utilisation, (2) make computers simple to use.
- Main components: Operating System, Language Translators (Compilers/Interpreters), Utilities.
3
Application Software
- Application software is written to perform a specific task or process (e.g., accounting, payroll, mailing lists).
- Most application software is written in high-level languages.
- Three sources of application software: (1) Write it yourself, (2) General-purpose packages, (3) Customised software.
4
Computer Languages
- A programming language is a set of rules that provides a way of instructing a computer to perform operations.
- Languages are lower (closer to machine, i.e., 0s and 1s) or higher (closer to human language).
- Three main categories: Machine Language, Assembly Language, High-Level Language.
Get complete notes with diagrams and examples
Full NotesKey Concepts
A complete set of instructions writtenGeneral programs written for a computerThe most important system softwarePrograms written to perform specific tasksThe only language that computers directly
Frequently Asked Questions
What are the important topics in Computer Software for NIOS Class 12 Computer Science?
Key topics in Computer Software include What is Software?, System Software, Application Software, Computer Languages. Study these first, then practise questions on each for the NIOS Class 12 board exam.
How should I revise Computer Software for the NIOS Class 12 board exam?
Learn the core ideas first, then work through the 43 practice questions on Computer Software. Revise definitions regularly and use flashcards for quick recall before the exam.
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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