工作

guest · 注册: 2002-10-07

<HTML>各位朋友，谈谈现在那种类型的程序员好找工作？ </HTML>

guest · 注册: 2002-10-07

guest · 注册: 2002-10-07

<HTML>SONET/SDH是什么意思？wireless ? 如果只懂C++ 会如何？谢谢</HTML>

guest · 注册: 2002-10-07

<HTML>try to know some C and RTOS(Real Time Operating Ssytem), used by the telecommunciation areas.

Sincerely,
qingmai</HTML>

guest · 注册: 2002-10-07

<HTML>为什么在telecommunication areas 用C而不用C++？另外是不是有关于RTOS的书籍？真诚感谢！</HTML>

guest · 注册: 2002-10-07

<HTML>C++ is trash. not fast enough.
infact, telecom use embaded assmble in C</HTML>

guest · 注册: 2002-10-07

guest · 注册: 2002-10-07

<HTML>C++ consumes lot of memory and realtime. It is good for apps. running on host, workstations those have enough memory and the realtime requirement is not very critical.

For some applications the extremely demands on realtime like high speed digital signal processing, many basic algorithms like convolution, IIR, FIR filtering, Fast Fourier Transform etc. must be done in realtime to process the input signal stream and then output the processed stream. The processing time for those routines like FFT, are strictly measured not in mS, but in nS or machine cycles with CPU clock on one specific DSP processor.

Sometimes EVEN the assemble code does NOT satisfy the realtime requirement, we will consider using digital-logic(hardware) like FPGA to implement some of those algorithms. It's an advanced topic in realtime DSP and some U in north america offer PHD. program for that.

If you look at the assembly code that a C++ complier generated, it does a lot of things overhead. I don't think it's good for high performance realtime applications.

I don't agree with "C++ is trash", I often use it to build state-of-art apps., even part of realtime OS. But for extremely realtime demanding code, assembly code is my first choice because building FPGA is really tough though it is fun.

C++ is doing perfect in many area but not all. You will never drive a luxury sedan to participate a F1 race game no matter it's a Benz, BMW... or you will deadly fail for sure.

Not only Nortel use C++, what you cited seems to me showing off something but not trying to prove something. </HTML>

guest · 注册: 2002-10-07

<HTML>It is funny.
I just tell you the truth against the 5th & 6th post.
Why do you think it is "SHOW OFF".
Is it any word in my previous post means "SHOW OFF"?

Don't you think you are do something here to SHWO OFF?
Don't you think what U are say here is the basic knowledge/understanding to a telecommunication software designer??

Nin-SHI-BU-SHI-SHOU-SHEN-Mo-Ci-JI-Le???? :)))))
</HTML>

guest · 注册: 2002-10-07

<HTML>It is funny.

It is.
I just tell you the truth against the 5th & 6th post.
Why do you think it is "SHOW OFF".
Is it any word in my previous post means "SHOW OFF"?
I'm sorry about that.
Don't you think you are do something here to SHWO OFF?
Not really.
Don't you think what U are say here is the basic knowledge/understanding to a telecommunication
software designer??
I don't know.
Nin-SHI-BU-SHI-SHOU-SHEN-Mo-Ci-JI-Le???? :)))))
What was that? I don't understand.

I'm sorry again.</HTML>

guest · 注册: 2002-10-07

guest · 注册: 2002-10-07

<HTML>Their opinion is right, TELCOM always is the biggest marketing. But it is difficult to learn or practice it at home. If you are a C++ developer, you can learn Java very quickly, and everything is free and easy download from Internet, I think this is a shortcut. BTW, your memory should be 128M at least. And it is perfect for those clients if you have over 2 yrs C++ experience.
</HTML>

guest · 注册: 2002-10-07

<HTML>It is happen to say your paper, I am still in Beijing , my major is optical tele, can I find a job in Canada?

Best regards.
</HTML>

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guest [开坛元勋] ID: 3241 声望: 843 声望力: 85 帖子: 24,912 家族: 来自: 金钱: -23,872 注册: 2002-10-07	工作 <HTML>各位朋友，谈谈现在那种类型的程序员好找工作？ </HTML>

	2001-02-07, 04:15 #1

guest [开坛元勋] ID: 3241 声望: 843 声望力: 85 帖子: 24,912 家族: 来自: 金钱: -23,872 注册: 2002-10-07	familiar with C++ with SONET/SDH,Wirless background. <HTML></HTML>

	2001-02-07, 11:03 #2

guest [开坛元勋] ID: 3241 声望: 843 声望力: 85 帖子: 24,912 家族: 来自: 金钱: -23,872 注册: 2002-10-07	谢谢，但。。。。 <HTML>SONET/SDH是什么意思？wireless ? 如果只懂C++ 会如何？谢谢</HTML>

	2001-02-07, 19:25 #3

guest [开坛元勋] ID: 3241 声望: 843 声望力: 85 帖子: 24,912 家族: 来自: 金钱: -23,872 注册: 2002-10-07	RE: 谢谢，但。。。。 <HTML>try to know some C and RTOS(Real Time Operating Ssytem), used by the telecommunciation areas. Sincerely, qingmai</HTML>

	2001-02-08, 09:45 #4

guest [开坛元勋] ID: 3241 声望: 843 声望力: 85 帖子: 24,912 家族: 来自: 金钱: -23,872 注册: 2002-10-07	谢谢！还有一个问题？ <HTML>为什么在telecommunication areas 用C而不用C++？另外是不是有关于RTOS的书籍？真诚感谢！</HTML>

	2001-02-08, 13:42 #5

guest [开坛元勋] ID: 3241 声望: 843 声望力: 85 帖子: 24,912 家族: 来自: 金钱: -23,872 注册: 2002-10-07	RE: 谢谢！还有一个问题？ <HTML>C++ is trash. not fast enough. infact, telecom use embaded assmble in C</HTML>

	2001-02-08, 23:12 #6

guest [开坛元勋] ID: 3241 声望: 843 声望力: 85 帖子: 24,912 家族: 来自: 金钱: -23,872 注册: 2002-10-07	Do not say that. Our Optical Dept in Nortel is using C++!!!!! <HTML></HTML>

	2001-02-09, 11:29 #7

guest [开坛元勋] ID: 3241 声望: 843 声望力: 85 帖子: 24,912 家族: 来自: 金钱: -23,872 注册: 2002-10-07	RE: Do not say that. Our Optical Dept in Nortel is using C++!!!!! <HTML>C++ consumes lot of memory and realtime. It is good for apps. running on host, workstations those have enough memory and the realtime requirement is not very critical. For some applications the extremely demands on realtime like high speed digital signal processing, many basic algorithms like convolution, IIR, FIR filtering, Fast Fourier Transform etc. must be done in realtime to process the input signal stream and then output the processed stream. The processing time for those routines like FFT, are strictly measured not in mS, but in nS or machine cycles with CPU clock on one specific DSP processor. Sometimes EVEN the assemble code does NOT satisfy the realtime requirement, we will consider using digital-logic(hardware) like FPGA to implement some of those algorithms. It's an advanced topic in realtime DSP and some U in north america offer PHD. program for that. If you look at the assembly code that a C++ complier generated, it does a lot of things overhead. I don't think it's good for high performance realtime applications. I don't agree with "C++ is trash", I often use it to build state-of-art apps., even part of realtime OS. But for extremely realtime demanding code, assembly code is my first choice because building FPGA is really tough though it is fun. C++ is doing perfect in many area but not all. You will never drive a luxury sedan to participate a F1 race game no matter it's a Benz, BMW... or you will deadly fail for sure. Not only Nortel use C++, what you cited seems to me showing off something but not trying to prove something. </HTML>

	2001-02-09, 14:07 #8

guest [开坛元勋] ID: 3241 声望: 843 声望力: 85 帖子: 24,912 家族: 来自: 金钱: -23,872 注册: 2002-10-07	... <HTML>It is funny. I just tell you the truth against the 5th & 6th post. Why do you think it is "SHOW OFF". Is it any word in my previous post means "SHOW OFF"? Don't you think you are do something here to SHWO OFF? Don't you think what U are say here is the basic knowledge/understanding to a telecommunication software designer?? Nin-SHI-BU-SHI-SHOU-SHEN-Mo-Ci-JI-Le???? :))))) </HTML>

	2001-02-09, 15:30 #9

guest [开坛元勋] ID: 3241 声望: 843 声望力: 85 帖子: 24,912 家族: 来自: 金钱: -23,872 注册: 2002-10-07	RE: ... <HTML>It is funny. It is. I just tell you the truth against the 5th & 6th post. Why do you think it is "SHOW OFF". Is it any word in my previous post means "SHOW OFF"? I'm sorry about that. Don't you think you are do something here to SHWO OFF? Not really. Don't you think what U are say here is the basic knowledge/understanding to a telecommunication software designer?? I don't know. Nin-SHI-BU-SHI-SHOU-SHEN-Mo-Ci-JI-Le???? :))))) What was that? I don't understand. I'm sorry again.</HTML>

	2001-02-09, 18:20 #10

guest [开坛元勋] ID: 3241 声望: 843 声望力: 85 帖子: 24,912 家族: 来自: 金钱: -23,872 注册: 2002-10-07	Maybe it just a little mis-understanding between us. DOn't mind it. <HTML></HTML>

	2001-02-09, 18:57 #11

guest [开坛元勋] ID: 3241 声望: 843 声望力: 85 帖子: 24,912 家族: 来自: 金钱: -23,872 注册: 2002-10-07	Java is a shortcut <HTML>Their opinion is right, TELCOM always is the biggest marketing. But it is difficult to learn or practice it at home. If you are a C++ developer, you can learn Java very quickly, and everything is free and easy download from Internet, I think this is a shortcut. BTW, your memory should be 128M at least. And it is perfect for those clients if you have over 2 yrs C++ experience. </HTML>

	2001-02-22, 12:46 #12

guest [开坛元勋] ID: 3241 声望: 843 声望力: 85 帖子: 24,912 家族: 来自: 金钱: -23,872 注册: 2002-10-07	some question <HTML>It is happen to say your paper, I am still in Beijing , my major is optical tele, can I find a job in Canada? Best regards. </HTML>

	2001-03-30, 04:11 #13