Computer Basic Knowledge

02/06/2026

02/06/2026

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07/03/2026

🌈 Happy Holi 2026! 🎨

May this Festival of Colors fill your life with happiness, success, and new opportunities. Let the vibrant colors of Holi celebration inspire positivity, growth, and bright achievements ahead.

Wishing you a joyful and prosperous Holi! 🌸✨

07/03/2026

🔹 Ctrl + N - Create a new workbook 🆕
🔹 Ctrl + O - Open existing workbook
🔹 Ctrl + S - Save your file
🔹 Ctrl + P - Open print dialog
🔹 Ctrl + W - Close current workbook
🔹 Ctrl + C - Copy selected data
🔹 Ctrl + X - Cut selected data
🔹 Ctrl + V - Paste content
🔹 Ctrl + Z - Undo last action
🔹 Ctrl + Y - Redo last undone action
🔹 Ctrl + A - Select entire worksheet
🔹 Ctrl + F - Find text or values
🔹 Ctrl + H - Replace text or values
🔹 Ctrl + B - Bold selected text
🔹 Ctrl + I - Italicize selected text
🔹 Ctrl + U - Underline text
🔹 Ctrl + 1 - Open Format Cells dialog box
🔹 Ctrl + D - Fill down data
🔹 Ctrl + R - Fill right data
🔹 Ctrl + Q - Open Quick Analysis Tool
🔹 Ctrl + Home - Jump to cell A1
🔹 Ctrl + End - Go to last used cell
🔹 Ctrl + Arrow Keys - Move to data edges
🔹 Ctrl + Page Down - Switch to next worksheet
🔹 Ctrl + Page Up - Switch to previous worksheet
🔹 Alt + A + M - Remove duplicates
🔹 Alt + N + V - Create PivotTable
🔹 Alt + N + F + S - Insert a slicer
🔹 Alt + = - AutoSum function
🔹 Ctrl + ; - Insert current date

✨ Quick Tip:
Use Ctrl + N whenever you need to start fresh — it instantly opens a new workbook ready for your next task! ⚡

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03/02/2026

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27/06/2025

Types of MAC Addresses.

In the world of networking, a MAC Address is like the unique identity of every device. It's used to send and receive data over a network.
There are three main types of MAC addresses – let's break them down 👇

🔴 Unicast
Data is sent from one device to another specific device.
■ One to One Communication
Example: You send a file directly to your friend's computer.

🔵 Multicast
Data is sent from one device to a selected group of devices.
■ One to Many Communication
Example: A teacher streaming a live class to selected students.

🟢 Broadcast
Data is sent from one device to all devices on the network.
■ One to All Communication
Example: Sending an ARP request to discover all IP addresses.

🔍 Understanding these MAC address types helps you master networking more easily!