Day 3: Input Devices (Keyboard, Mouse, Scanner)

Input Devices (Keyboard, Mouse, Scanner)

1️⃣ Input Device kya hota hai?

Input Device wo device hoti hai jisse hum computer ko information (data) dete hain।

👉 Simple shabdon mein:
Jis cheez se hum computer mein data daalte hain = Input Device

Examples:

  • Keyboard

  • Mouse

  • Scanner

  • Microphone

  • Webcam

2️⃣ Keyboard (Sabse important input device)

✅ Keyboard kya hai?

Keyboard ek device hai jisse hum computer mein letters, numbers aur symbols type karte hain।

✅ Keyboard ka use

  • Typing karna

  • Letter aur application likhna

  • Password dalna

  • Search karna

✅ Keyboard ki main keys

  • Alphabet keys (A–Z)

  • Number keys (0–9)

  • Enter key

  • Spacebar

  • Backspace

  • Shift key

👉 Keyboard bina computer chalana mushkil ho jaata hai।

3️⃣ Mouse (Computer chalane ka aasaan tool)

✅ Mouse kya hai?

Mouse ek pointing device hai jisse hum screen par kaam karte hain।

✅ Mouse ka use

  • File open karna

  • Select karna

  • Click karna

  • Scroll karna

✅ Mouse ke main functions

  • Left click – select/open

  • Right click – options

  • Double click – file open

  • Scroll – page upar–neeche

👉 Mouse se computer chalana bahut easy ho jaata hai।

4️⃣ Scanner (Paper ko digital banana)

✅ Scanner kya hai?

Scanner ek device hai jo paper, photo ya document ko computer mein digital form mein convert karta hai।

✅ Scanner ka use

  • Photo scan karna

  • Documents scan karna

  • ID card scan karna

  • Certificates scan karna

👉 Scanner paper ko computer file bana deta hai।

✅ Short Summary (Yaad rakhne layak)

  • Input Devices = Data dene wale devices

  • Keyboard = Typing ke liye

  • Mouse = Screen par kaam ke liye

  • Scanner = Paper ko digital banane ke liye

🙂