All Questions
Tagged with data digital-logic
9
questions
0
votes
0
answers
261
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How to calculate how much voice channels is being multiplexed
I would like to know how I could calculate from the bitstream which has a bitrate of 2,048 Mbps into how much voice channels is being used. I know that the syn has 32 bits and sign is 16 bits.
Bitrate ...
0
votes
1
answer
52
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Implementing a simple logic equation
I need to do a lab that seemed like it was simple, but for some reason i cant get the right output for this function. its G(0)= T1T3'+T5T7'. These are data inputs.. I can only use NAND and NOR gates. ...
0
votes
2
answers
564
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Can 74HCT buffers work just as well as 74HC buffers between parallel port and target?
I'm making a circuit to program the AT89S52 microcontroller in a serial fashion as follows:
Call me paranoid but this time I'm using resistors on all outputs to the micro as well as RC networks on ...
2
votes
4
answers
132
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Are there chips encoded with fixed 8bit values?
I am assembling a few data acquisition fixtures and would like my software to be able to identify the fixtures programatically. I have a breadboard that I can use for basic circuits. The DUT signals ...
- 359
0
votes
1
answer
94
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Digital command problems with AC/DC Common Ground
AC/DC Common Ground
On a model railroad layout I want to have an LED show "track occupancy".
The train (Maerklin) uses AC, both sides of the track are 'ground', the center is 'hot'.
I also want to ...
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10
votes
4
answers
2k
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Avoiding confusion between no input and a zero in binary?
Suppose I'm transmitting data through FM where 0 is 2Hz and 1 is 4Hz. The transmitter is transmitting 2Hz when there is no input. If I fed the recieved binary to a UART port of a microcontroller, how ...
- 717
4
votes
4
answers
1k
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ADC resolution selection
I want to convert analog output of an accelerometer to digital codes.
I understand that the sampling rate of the ADC should be with reference to Nyquist criteria.
Please let me know how to decide ...
- 1,156
5
votes
3
answers
614
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Has anyone transmitted data across a badly coupled transformer and recovered the data correctly
EDITED June 9th 2013 to give more detail (hopefully)
I've recently set-up a data transmission system on a rotating machine. The data was collected and serialized from several ADCs connected to strain ...
- 465k
3
votes
4
answers
379
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Bit/data stream unknown. How to figure out?
I have taken apart a digital weight scale and on the circuit are two pins labelled 'test'. When connecting this to the soundcard of my PC I can see it is a digital signal (high/lows), but I don't know ...
- 339