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What property (resistance, capacitance) changes in electret microphone when it receives sound?
I hooked up a two terminal microphone to an ohmmeter and it showed 3.145 kΩ and it changed a little bit like an ohm or two when i blew into the mic.
I noticed that electret and piezo microphones look...
Thanks for your reply! The reason I am asking is because I want to learn PCB routing software, but I don't want to waste my time learning something that is widely unknown and not used anywhere. Besides knowledge of commonly used PCB routing software will look good on my resume.
What is the most widely used PCB Editor program in companies that design electronics? I would like to see replies from people that actually work int the industry.
best programming language engineers
The truth is the knowledge of any of mentioned languages is good.
Besides when you start working your employer will tell what he wants you to get familiar with.
I think learning C++, is the way to go, because other programming languages have similar syntax...
Where do I go to obtain electrical chareacteristics of parallel port?
I want to know is how much currrent will a pin draw when exposed to +5 voltage, and how much current can I draw from an output pin? What about input/output data pins (2-9)? I know there are plenty of rule of thumbs out there...
Re: C++ Questions
Thank you for all your help DrBob. I have inpout32.dll in my windows/system32 directory, but i heard that i need to register this dll.
When i do that, with regsvr32 it gives me an error DllRegisterServer no entry point was found, and i can't find the fix for it... so i guess...
Re: C++ Questions
hold on... all i need to do is to put inpout31.dll in my windows directory, and program as if i was in win 98? is it that simple? or do i need to call this dll somewhere in my code?
sorry im new to programming.
and where do i get this inpout31.dll?
thanx for replying...
I Have Windws XP and i want to access my parallel port using C++. I have heard that it is hard to do it in this operating system. Are there any tutorials anywhere on the net that would teach me how to access parallel port specifically for windows XP, using just plain old dev C++?
I heard that...
More i do research on serial port more conflicting info i come across.
One source says that RTS pin (request to send) is at space voltage (+12) when
Computer is able to receive data... another states that it is at mark voltage (-12) when it is ready to receive data..
Which is it?
I am reading a tutorial about serial port and it says that the RTS pin (RequestToSend) is on most work stations on space voltage meaning +12V which
for serial port is logic 0... Is that True?
Added after 1 hours 33 minutes:
Also.. how much current can i draw from this pin?
Hello, can anyone point me to resources on serial ports?
I need to know voltages and pin functions... i'll be building a ir receiver and would like to know what i'm donig so that i dont fry my motherboard.
Also, some info on how to access the serial port with software preferably with C++
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