Computer Software
NIOS · Class 12 · Computer Science
Complete topic list for Computer Software in NIOS Class 12 Computer Science. Key concepts, sub-topics, and what to focus on for board exams.
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Topics in Computer Software
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.
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.
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.
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.
Key Concepts
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