First Chapter
Topics: Bluetooth, Wi-Fi and WiMAX
আজ তোমাদের Information and Communication Technology-এর ‘First Chapter : Information and Communication Technology: World and Bangladesh perspective’-এর Topics: Bluetooth, Wi-Fi and WiMAX থেকে গুরুত্বপূর্ণ বিষয় নিয়ে আলোচনা করা হলো।
Topics: Bluetooth, Wi-Fi and WiMAX:
Bluetooth
● Function: Short-range data transfer between devices like headphones, speakers, smartwatches etc.
● Range: Up to 10 meters (33 feet)
● Speed: Up to 54 Mbps (latest versions)
● Frequency band: 2.4 GHz
● Applications: Connecting headphones, speakers, wearables, transferring files between devices, wireless data exchange in personal area networks (PANs).
● Pros: Low power consumption, secure connections, easy to set up, widely supported.
● Cons: Limited range, slow speeds, not suitable for large data transfers.
Wi-Fi
● Function: Connecting devices to the internet and local networks.
● Range: Up to 100 meters (330 feet) indoors, longer outdoors.
● Speed: Up to several Gigabits per second (latest versions)
● Frequency band: 2.4 GHz and 5 GHz
● Applications: Connecting computers, phones, tablets, TVs and other devices to the internet, streaming music and videos, gaming online, file sharing.
● Pros: High speeds, good range, widely available, supports multiple devices.
● Cons: Higher power consumption than Bluetooth, can be affected by interference from other devices.
WiMAX
● Function: Providing broadband internet access over a wide area.
● Range: Up to several kilometers (miles)
● Speed: Up to 70 Mbps (original versions), potentially much higher in newer technologies.
● Frequency band: Varies depending on region and license
● Applications: Fixed wireless broadband for homes and businesses, backhauling for cellular networks.
● Pros: Wide range coverage, high speeds, potential for future advancements.
● Cons: Less widely available than Wi-Fi, higher infrastructure cost, not as commonly used for individual devices.
Here's a table summarizing the key differences:
লেখক: প্রভাষক, তথ্য ও যোগাযোগ প্রযুক্তি বিভাগ
আদমজী ক্যান্টনমেন্ট কলেজ, ঢাকা
জাহ্নবী
