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Articles Home » IT - высокие технологии » Wireless N - RT/MTK21NOV USB адаптер
Wireless N - RT/MTK21NOV USB адаптер

Computer Science Sumita Arora Class 11 2021 99%

 

USB Wi-Fi адаптер непонятной модели... естественно - из Китая. Очень дешевый, цену даже не скажу - не запомнил... Но пишу то, что есть. + Щелкайте по фото, чтобы увеличить!

 

Wireless N RT/MTK21NOV обзор Wi-Fi USB адаптера

 

Итак, пластиковый бокс, или блистерная упаковка. Устройство сразу видно через прозрачный пластик...

 

Wireless-N адаптер Wi-Fi модем, адаптер USB устройство

 

Вскрываем упаковку, внутри картонный вкладыш. На нем, на лицевой стороне: Wireless-N, USB Adapter. 150 Mbps. 2.4 GHz. USB2.0 Hi-Speed. IEE 802.11b/g/n

 

Wireless-N RT/MTK21NOV характеристики беспроводного адаптера

 

На обратной стороне техническая информация - характеристики и спецификации... Я не буду все перечислять. Вы это можете видеть на фото выше.

 

Wireless-N USB Adapter RT/MTK21NOV диск с драйверами

 

Картонный вкладыш складывающийся, в внутри маленький компакт диск, 80 мм Mini-CD, на нем записаны драйвера. Здесь драйвера под Linux, Mac и Windows - начиная с XP и заканчивая 10... На диске написано RT/MTK21NOV - эти адаптеры есть на чипах Realtek и MediaTek, поэтому там драйвера и на те и на эти устройства.

 

описание USB адаптера Wireless-N RT/MTK21NOV

 

Сам адаптер. Это небольшое USB устройство, похожее на флэш-накопитель. Отдельно идет накручивающаяся антенна.

 

проблема с установкой драйверов на Wi-Fi 802.11 n WLAN

 

Втыкаем этот адаптер в USB-порт, и сразу выскакивает сообщение... драйвера в Windows на него нет...

 

установка драйверов на USB адаптер для Wi-Fi Wireless-N RT/MTK21NOV

 

Устанавливаем с диска... Вот так в Диспетчере устройств.

 

Ну, в общем-то, все. Устройство работает, проблем никаких нет. Этот адаптер покупался не для ПК, а для цифровой DVB-T2 приставки. Там он работает без проблем. Можно работать и без антенны, в этом случае максимальное расстояние не более 15-20 метров. А с антенной 100 и более метров.

 

Вот так, почти ничего об этом адаптере... слов нет.

 

 

Михаил Дмитриенко
Специально для PRETICH.ru
Февраль 2021 г.

 

 

Wireless N - RT / MTK21NOV USB adapter

 

+ Click on the photo to enlarge!

 

USB Wi-Fi adapter of unknown model... of course - from China. Very cheap, I won't even say the price - I don't remember... But I write what I have. So, a plastic box, or a blister pack. The device is immediately visible through the transparent plastic...

We open the packaging, inside there is a cardboard insert. On it, on the front side: Wireless-N, USB Adapter. 150 Mbps. 2.4 GHz. USB2.0 Hi-Speed. IEE 802.11b / g / n

On the reverse side are technical information - characteristics and specifications... I will not list everything. You can see this in the photo above.

Folding cardboard insert, inside a small CD, 80 mm Mini-CD, drivers are recorded on it. Here are drivers for Linux, Mac and Windows - from XP to 10 ... The disk says RT / MTK21NOV - these adapters are on Realtek and MediaTek chips, so there are drivers for both devices.

The adapter itself. It is a small USB device that looks like a flash drive. There is a winding antenna separately. We plug this adapter into a USB port, and a message immediately pops up... there is no driver for it in Windows... Install from disk... Like this in Device Manager.

Well, in general, everything. The device works, there are no problems. This adapter was bought not for a PC, but for a digital DVB-T2 set-top box. There he works without problems. You can work without an antenna, in this case the maximum distance is no more than 15-20 meters. And with an antenna of 100 meters or more.

So, almost nothing about this adapter... no words.

 

 

Mikhail Dmitrienko
Especially for PRETICH.ru
February 2021

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Computer Science Sumita Arora Class 11 2021 99%

But to call it merely a textbook is to miss the point. Sumita Arora’s work is a fascinating cultural artifact—a mirror reflecting both the strengths and the profound contradictions of how computer science is taught in India. First, let us acknowledge its undeniable genius. The book’s architecture is a masterpiece of exam-oriented pedagogy . It takes a teenager who has never written a line of code and walks them, line by tedious line, through the labyrinth of Python. The chapters are predictable in the most comforting way: theory, syntax, solved examples, unsolved questions, and finally, the dreaded "Output Trivia."

In the sprawling ecosystem of Indian secondary education, few textbooks achieve the cult-like status of Sumita Arora’s Computer Science with Python for Class 11. Walk into any coaching hub or school library, and you will see its signature cover—dog-eared, highlighted, and bracketed. For millions of CBSE students, it is not merely a book; it is the Book . It is the canonical text, the final arbiter of syntax, and the gatekeeper to engineering entrances.

The book teaches syntax brilliantly, but it often fails at semantics . It tells you what a list is, but rarely inspires you when to use one over a tuple in a real-world application. The most interesting critique of Sumita Arora’s Class 11 book is what it leaves out. The syllabus—and by extension, the book—is stuck in a time warp from the early 2000s. The chapters on "Boolean Algebra" and "Computer Logic Gates" feel like relics of a hardware era. Meanwhile, modern fundamentals like version control (Git), basic networking security, or even the ethical implications of AI are absent. computer science sumita arora class 11

Consider the relentless focus on "dry runs" and "trace tables." While valuable for debugging, the book’s obsession with manually calculating every variable change often obscures the higher-level concept of abstraction. A student can spend twenty minutes tracing a nested loop on paper, understand the motion of the cursor, yet have absolutely no idea why they would ever use that loop to solve a real problem—like filtering a dataset or automating a spreadsheet.

But it is . Real programming is messy, creative, and iterative. It involves Google, Stack Overflow, frustration, and sudden joy. This book offers none of that. It offers certainty in a field defined by change. But to call it merely a textbook is to miss the point

Until the CBSE exam pattern changes, the book will remain the undisputed king. But every great programmer who survived Class 11 knows the secret: you use Arora to pass the test, and then you forget her syntax to learn the art.

For the average Class 11 student, drowning in five other subjects, this predictability is salvation. The book excels at . Want to know how a while loop differs from a for loop? Flip to page 142. Need the definition of a "token"? It’s in a neat box. The student does not need to think like a computer scientist; they need to regurgitate like a machine. And in the high-stakes game of board exams, Arora delivers. The Curious Case of the "Textbook Code" However, the interesting conflict arises when you actually run the code. Veteran Python developers joke about the "Sumita Arora syndrome": code that looks beautiful on paper but crashes on a real interpreter. The book often prioritizes complex, memory-based tricks over simple, readable logic. It teaches students to write code for a human examiner, not for a computer. The book’s architecture is a masterpiece of exam-oriented

It is . In a country with a million students per year, standardized, predictable, and exhaustive content is non-negotiable. The book democratizes access to computer science; a student in a village with a poor teacher can still learn the definition of a "stack" from this book. For that, Arora deserves immense respect.

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