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Results tagged with digital-logic
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user 71895
Digital electronics treats discrete signals, unlike analog electronics which treats continuous signals. Digital logic is used to perform arithmetic operations with electric signals and constitutes the base for building CPUs.
2
votes
Need help choosing microcontroller (for low-complexity task)
You could look at CPLDs instead. The cheapest ones are generally cheaper than a micro, and they're far better geared up for scanning keyboards. Altera, Xilinx, and Lattice Semi are generally the names …
- 6,260
2
votes
What is the simplest way to invert a signal with just one jumper?
Do it in software
Most micros these days include some kind of EEPROM/flash storage, so store the setting in there. Then you can handle this entirely in software.
How to configure this setting? I'd b …
- 6,260
1
vote
Correct terminology for 'clock' that doesn't oscillate?
Gated clocks are very common. If you're driving another chip with a SPI bus, it reduces EMC if you're not running that clock all the time. Also some SPI devices lack an enable input, so a gated clock …
- 6,260
4
votes
SPI chip select optimisation
In addition to points already noted, do check that all the chip-select timings on both devices will always be met. It's easy to remember to check chip-select timings for the chip you're selecting, bu …
- 6,260
2
votes
How to get a FPGA design that will definitely work on actual hardware
The most obvious first step is to check the warnings.
Xilinx tools produce log files which warn about anything that could be not what the coder intended. Sometimes this is annoying, when you have re …
- 6,260