With the right processor instruction set like that of the 8080, you could patch the UVPROM without erasing it because NOP instruction could be all cleared bits. Just include a series of NOP instructions wherever you might want to program a patch without erasing first.
Real time operation by itself does not preclude a preemptive multitasking operating system. The hardware itself is a larger problem if large amounts of state must be maintained for task switches and memory management. Features like Intel's System Management Mode are particularly crippling.
I very much doubt that LED lights produce output in the 90 - 110 MHz band. Switching supplies are generally 0.1-2 MHz.
The switching power supplies typically used are not low noise resonant supplies so they have appreciable harmonic output. Being intended for consumer applications, they skimp on things like filtering and suppression.
But hey, call the FCC. They don't mess around when it comes to interfering devices.
The FCC has acted in some instances but even emissions that meet part 15 requirements can cause significant interference. The easiest solution is to switch to passive high voltage halogen incandescent bulbs.
LED lighting systems don't have ballasts. True, LEDs require power conditioning (for these applications, it's some sort of switched mode AC/DC converter with constant current output), but those kinds of circuits are highly efficient and robust.
"Some sort of switched mode AC/DC converter with a constant current output" is a ballast. That is exactly what you find in an electronic ballasts designed for discharge lamps. In consumer based lighting, the electronic ballast used for either discharge lighting or LEDs is the least reliable part.
Discharge lamps have a negative resistance characteristic so they require ballasts to limit their current. That can be as simple as a resistor but is almost always a reactive element for low power dissipation. Electronic gas discharge ballasts are high voltage compliant current sources. Laser tubes often include a ballast resistor.
LEDs have a low dynamic resistance combined with significant variation in forward voltage drop as well as a negative voltage temperature coefficient all of which combine to create much the same problem as well as current sharing issues if LEDs are operated in parallel. Without ballasting, parallel LEDs are subject to thermal runaway.
Both use reactive ballasts in one form or another that produce a current output. Gas discharge lamps operate at high voltages and require even higher voltage starting. LEDs require additional provisions for current sharing and failsafe operations of long strings.
For traffic signals LEDs are obviously superior except maybe in harsh conditions but I am not convinced that is so for street lighting where they are less efficient. Their more complex ballasting and package requirements lead to poor reliability compared to the individual LEDs themselves.
There are all kinds of ways to design the hardware to prevent problems besides the obvious of measuring various environmental variables like temperature.
Feedback from the output of each slicer can adjust the comparison threshold to produce an output with an equal number of high and low states over an arbitrary period of time. This technique is commonly used for closed loop control of duty cycle in applications requiring precision waveform generation. The slicer threshold can be monitored as another health indicator.
The diodes used as noise sources can be used in pairs and measured differentially to remove common mode influences. This can be extended to use multiple sets of diodes for both health monitoring and redundancy.
They skipped the game controllers used by personal computers as well. The Apple II predated the N64 by almost 20 years and used analog joysticks. Console controllers took a long time to even catch up to that.
The fuel economy standards you refer to have the unintended side effect of encouraging the production of heavier low MPG vehicles. As the standards are raised, the manufacturers discontinue models and add weight to their replacements to avoid the more stringent requirements.
The GPS to baseband part of the design excludes the part that computes the navigation solution. The problem *now* is finding a separate integrated GPS to baseband solution since the quest for greater and greater integration means that most or all GPS chipsets no longer have this as a separate function.
Except that the courts have expanded interstate commerce to include anything *affecting* interstate commerce including intrastate commerce. And of course now if something does not fit under the expanded interstate commerce clause, it can always be regulated or banned via the power to tax.
Modern tantalum capacitors still have 2 to 4 times lower ESR than modern low ESR aluminum electrolytic capacitors. This difference is especially pronounced at higher frequencies. Of course an aluminum electrolytic of 2 to 4 times the capacitance to make up the difference where ESR is important is still less expensive than a tantalum although not quite as small.
I have been considering the Beaglebone Black for an embedded project but the one thing about it that bothers me is the lack of HDMI 1920x1080 support. I do not need fast graphics performance but being able to use x1080 displays at native resolution is important.
And then *one* person notices that one certificate does not match the other and the certificate authority has to explain how someone else signed a provably false certificate with their private key. Has this happened yet?
The NSA or other agency can get away with this up until the time one person notices and at that point, the certificate authorities and their system lose all credibility.
If you exclude the integration issues, then you can go further back to 1959 with the GE Tunnel Diode Manual which discusses two-terminal negative differential resistance logic.
Since the speed was limited by the lead inductance of the discrete parts, I wonder how well an integrated version would perform. I suspect integration density would be limited by power dissipation as usual but integrated tunnel diode logic would sure be fast.
The chart you linked shows no such thing. It shows dead by suicide using a firearm versus death by homicide using a firearm and the later is only a fraction of self defense which the chart conveniently does not show. A majority of self defense with a firearm does not involve homicide and a majority of that does not even involve firing the weapon.
Slashdot Mirror
With the right processor instruction set like that of the 8080, you could patch the UVPROM without erasing it because NOP instruction could be all cleared bits. Just include a series of NOP instructions wherever you might want to program a patch without erasing first.
Real time operation by itself does not preclude a preemptive multitasking operating system. The hardware itself is a larger problem if large amounts of state must be maintained for task switches and memory management. Features like Intel's System Management Mode are particularly crippling.
The switching power supplies typically used are not low noise resonant supplies so they have appreciable harmonic output. Being intended for consumer applications, they skimp on things like filtering and suppression.
The FCC has acted in some instances but even emissions that meet part 15 requirements can cause significant interference. The easiest solution is to switch to passive high voltage halogen incandescent bulbs.
I get about 6 months on Edison base compact fluorescent or LED lamps because of summer lightning storms. Incandescent are much more economical for me.
"Some sort of switched mode AC/DC converter with a constant current output" is a ballast. That is exactly what you find in an electronic ballasts designed for discharge lamps. In consumer based lighting, the electronic ballast used for either discharge lighting or LEDs is the least reliable part.
Discharge lamps have a negative resistance characteristic so they require ballasts to limit their current. That can be as simple as a resistor but is almost always a reactive element for low power dissipation. Electronic gas discharge ballasts are high voltage compliant current sources. Laser tubes often include a ballast resistor.
LEDs have a low dynamic resistance combined with significant variation in forward voltage drop as well as a negative voltage temperature coefficient all of which combine to create much the same problem as well as current sharing issues if LEDs are operated in parallel. Without ballasting, parallel LEDs are subject to thermal runaway.
Both use reactive ballasts in one form or another that produce a current output. Gas discharge lamps operate at high voltages and require even higher voltage starting. LEDs require additional provisions for current sharing and failsafe operations of long strings.
For traffic signals LEDs are obviously superior except maybe in harsh conditions but I am not convinced that is so for street lighting where they are less efficient. Their more complex ballasting and package requirements lead to poor reliability compared to the individual LEDs themselves.
ISPs used to do this. Part of their contract was not to use the service with more one computer.
Now when the king accuses you of treason, you either say yes, or you are now guilty of treason for having called the king a liar.
This is already the case. An exculpatory "no" is not protected.
http://en.wikipedia.org/wiki/Brogan_v._United_States
There are all kinds of ways to design the hardware to prevent problems besides the obvious of measuring various environmental variables like temperature.
Feedback from the output of each slicer can adjust the comparison threshold to produce an output with an equal number of high and low states over an arbitrary period of time. This technique is commonly used for closed loop control of duty cycle in applications requiring precision waveform generation. The slicer threshold can be monitored as another health indicator.
The diodes used as noise sources can be used in pairs and measured differentially to remove common mode influences. This can be extended to use multiple sets of diodes for both health monitoring and redundancy.
Punching a vanadium tape and storing it on Charon would probably work well.
This article covers the problem better than I can explain it in a short post:
http://www.thetruthaboutcars.com/2012/10/how-cafe-killed-compact-trucks-and-station-wagons/
They skipped the game controllers used by personal computers as well. The Apple II predated the N64 by almost 20 years and used analog joysticks. Console controllers took a long time to even catch up to that.
The fuel economy standards you refer to have the unintended side effect of encouraging the production of heavier low MPG vehicles. As the standards are raised, the manufacturers discontinue models and add weight to their replacements to avoid the more stringent requirements.
The GPS to baseband part of the design excludes the part that computes the navigation solution. The problem *now* is finding a separate integrated GPS to baseband solution since the quest for greater and greater integration means that most or all GPS chipsets no longer have this as a separate function.
Except that the courts have expanded interstate commerce to include anything *affecting* interstate commerce including intrastate commerce. And of course now if something does not fit under the expanded interstate commerce clause, it can always be regulated or banned via the power to tax.
Modern tantalum capacitors still have 2 to 4 times lower ESR than modern low ESR aluminum electrolytic capacitors. This difference is especially pronounced at higher frequencies. Of course an aluminum electrolytic of 2 to 4 times the capacitance to make up the difference where ESR is important is still less expensive than a tantalum although not quite as small.
I have been considering the Beaglebone Black for an embedded project but the one thing about it that bothers me is the lack of HDMI 1920x1080 support. I do not need fast graphics performance but being able to use x1080 displays at native resolution is important.
And then *one* person notices that one certificate does not match the other and the certificate authority has to explain how someone else signed a provably false certificate with their private key. Has this happened yet?
The NSA or other agency can get away with this up until the time one person notices and at that point, the certificate authorities and their system lose all credibility.
If you exclude the integration issues, then you can go further back to 1959 with the GE Tunnel Diode Manual which discusses two-terminal negative differential resistance logic.
Since the speed was limited by the lead inductance of the discrete parts, I wonder how well an integrated version would perform. I suspect integration density would be limited by power dissipation as usual but integrated tunnel diode logic would sure be fast.
Besides not being suitable for complementary devices, GaAs also has no native oxide insulator.
I blame you for being insufficiently persuasive.
I blame myself for the same reason but I have not voted for the winner or the loyal opposition loser either ever.
Pre-information-age history compresses to a point when viewed from far enough away. Alexander the Great, Washington, and Nimitz were contemporaries.
If the latency included with IOIO was acceptable, then any USB I/O device could be used.
These are critical problems with first past the post voting that many other simple systems lack:
http://en.wikipedia.org/wiki/Hotelling's_law
http://en.wikipedia.org/wiki/Duverger's_law
I have every expectation that short of violent revolution, the situation will not change and I act accordingly. We get the government we deserve.
The chart you linked shows no such thing. It shows dead by suicide using a firearm versus death by homicide using a firearm and the later is only a fraction of self defense which the chart conveniently does not show. A majority of self defense with a firearm does not involve homicide and a majority of that does not even involve firing the weapon.