🌟 What is Software?

Software is a set of programs that tells the computer what to do.
Without software, a computer is just a machine.

👉 Think: Hardware = Body, Software = Brain

🔷 1. SYSTEM SOFTWARE (The Boss 👑)

System software controls the computer and helps everything run smoothly. It also provides a platform for application software.

🖥️ a) Operating System (OS)

The OS is like a manager between the user and the computer.

It controls memory, files, and all operations.

👉 Examples: Windows, Linux, macOS

👉 Memory Trick: OS = Overall System control

🔤 b) Language Processors

These convert programming language into machine language.

Assembler → Converts assembly language
Compiler → Converts the whole program at once
Interpreter → Converts line by line

👉 Easy Trick:
A → Assembly | C → Complete | I → Individual lines

🛠️ c) Utility Programs

These help in maintaining the computer.

Antivirus → protects
Backup → saves a data copy
Compression → reduces size
Disk Defragmentation → organizes data

👉 Think: Utilities = Computer Caretaker

🔌 d) Device Drivers

Drivers help the computer communicate with devices.

👉 Examples: Printer, Keyboard, Display drivers

👉 Easy Trick: Driver = Helps devices “drive” into the computer

🔶 2. APPLICATION SOFTWARE (For Users 👩‍💻)

Application software is used to perform specific tasks.

📄 a) General Purpose Software

Used in daily life.

MS Word → writing
MS Excel → calculations
PowerPoint → presentations
MS Access → database

👉 Think: Daily Use Apps

🏢 b) Special Purpose Software

Used for specific business tasks.

Billing software → bills
Payroll → salaries
Reservation → bookings
Inventory → stock

👉 Think: Office Work Software

🎯 c) Customised Software

Made specially for a user or organization.

Banking software
Hospital system
School management system

👉 Think: Made-to-order software

🧠 QUICK MEMORY

👉 System Software = Controls computer
👉 Application Software = Used by user

💡 COMPUTER LANGUAGES – EASY NOTES

🌈 Types of Languages

1GL → 2GL → 3GL → 4GL
(Binary → Symbols → English → Human-like)

🔴 1GL – Machine Language

Uses 0 and 1
A computer understands directly

👉 Very fast but very difficult

👉 Trick: Machine = 0 & 1

🟠 2GL – Assembly Language

Uses short codes (ADD, SUB)
Needs assembler

👉 Easier than 1GL but still difficult

👉 Trick: Assembly = Short codes

🔵 3GL – High-Level Language

Uses English-like words
Easy to write and understand

👉 Examples: C, C++, Java, Python

👉 Trick: High-level = Human readable

🟢 4GL – Fourth Generation

Very close to human language
Used in apps and databases

👉 Examples: SQL, PHP

👉 Trick: 4GL = Fast & Friendly

⚡

👉 1GL → Binary (Hard but Fast)
👉 2GL → Codes (Better)
👉 3GL → English (Easy)
👉 4GL → Human-like (Easiest)

software and its types