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প্রেজেন্টেশন

১১ সেপ্টেম্বর, ২০২১ ১২:৩২ অপরাহ্ণ

Internet and email

The Internet links private PCs, public networks and business networks together using telephone lines to form one vast world-wide network. It allows computer users to share and exchange information with each other wherever they are in the world.