Saturday, December 31, 2022
Friday, December 30, 2022
Avatar Review
One of the standout elements of "Avatar" is its groundbreaking visuals and special effects, which were groundbreaking at the time of its release and hold up well even by today's standards. The use of motion capture technology and 3D animation allowed the filmmakers to create fully-realized, lifelike characters and breathtakingly realistic environments that are a joy to behold. The movie's action scenes are also well-choreographed and exciting, with impressive set pieces that showcase the unique creatures and landscapes of Pandora.
The story of "Avatar" is not particularly original, with elements of the "white savior" trope and a simplistic, good-versus-evil narrative that pits the human characters against the Na'vi. However, the movie's themes of environmentalism and cultural imperialism are timely and thought-provoking, and the performances of the cast, particularly Sam Worthington as Jake and Zoe Saldana as the Na'vi warrior Neytiri, are strong.
Overall, "Avatar" is a visually stunning and entertaining action adventure that is worth seeing for its groundbreaking special effects and strong performances. While its story may be somewhat simplistic and familiar, the movie's themes and visuals more than make up for it.
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Best wishes,John Coffey
Tuesday, December 20, 2022
What It's Like To be a Computer: An Interview with GPT-3
There is this thing called the Turing Test, invented by Alan Turing seventy years ago. The idea is to see if a computer could become smart enough to fool a human into thinking he is talking to a real person. We have crossed a threshold where computers have almost reached this point.
The AI appears to understand more than it actually does. It has studied human conversation and a mountain of raw information so that it can imitate a human conversation.
However, having a conversational computer isn't the only threshold the machines have crossed recently. Computer AI has become much more useful, performing all kinds of new tasks, such as surgery or writing computer code. By the end of the decade, machines will be performing many more jobs. It is very likely that in the next couple of decades, or even in this one, we will have general-purpose robots that could perform any task that we want them to do.
Friday, December 16, 2022
The Current State of Windows on ARM-Architecture (& Its Promising Future)
The industry is moving toward efficient ARM processors, in an effort to catch up to Apple.
This video is talking about a future processor. I saw another video claiming that Microsoft's current ARM-based devices fall way short of what Apple's M-series chips can do.
Although the video claims that there is no problem running X86 programs on ARM processors using emulation (https://youtu.be/psbucvxF-UU?t=195), reportedly many videogames have difficulty or don't work at all under emulation. However, if we are moving toward two competing hardware architectures, I hope that many software makers will compile their software to work on both platforms. For video games, it can be more complicated because the GPU hardware can be different.
I don't think that Intel will stand still as their processors get out-competed. All they would need to do is come up with more powerful processors to recapture the market. They also are planning to come out with 3-nanometer chips in a couple of years.
However, ARM's main strength is power efficiency, so it will remain popular on portable devices.
According to one video, the industry is moving away from PCs as we know them today, and toward System on a Chip devices like what Apple has done. Although these tend to be more efficient, you can't change the hardware configuration, like the memory size, after you buy them.
Wednesday, December 7, 2022
Tuesday, November 29, 2022
How Machine Language Works
I was fortunate that I got interested in computers really early, back in 1975, which was a couple of years before computers like the Apple II, Commodore Pet, and TRS-80 came out. I was also fortunate that someone I met lent me a computer that he had built from a kit, which was an RCA Elf. This computer was so primitive and had so little memory, only a quarter K of RAM, that you had to program it with a calculator-like keypad inserting numerical instructions into specific memory locations. I was able to master this just enough to get a working knowledge of machine code programming.
There was a saying going back to this time period that if you knew how to program in machine code then you had a much deeper understanding of how computers work. I learned several machine languages, and this proved very useful to me in getting jobs in the video game industry and being able to do those jobs. When I went to work for Xanterra in 1999 to do Gameboy Color programming, I sort of hit the ground running because I already knew how to program Z80s, which I had learned in the 1970s. The owner of the company was impressed enough with my skills that he gave me a raise after my first week.
Sunday, November 20, 2022
iPad Pro M2: What Does "Pro" Even Mean?
https://www.youtube.com/watch?v=O_WbmIIy4vk
If you have a good smartphone, a tablet feels unnecessary.
The last thing I need is a tablet that is 2.5 times faster than my desktop computer. This is the kind of power you want on a laptop or a desktop.
The M1 is only 7% slower than the M2.
A couple of years ago, I bought the Amazon Fire tablet on Black Friday for $80, which is not a powerful tablet, but it works just fine as a portable Internet and streaming device.
4K Gamer Pro Review
https://www.youtube.com/watch?v=dL9U6n4IixQ
I did some experimenting on my computer by playing video games and videos at resolutions from 720P up to 5K. With my eyesight, which is about 20/30, on a 27-inch screen, I could not tell a difference between 1080P and higher. We are talking about levels of detail that are hard to perceive. I personally like 1440P, not that it was really an improvement over 1080P. It is maybe for me more psychological that I think that 1440P is better.
Even if you have 20/20 vision and a 60-inch screen, you are going to be sitting further back, whereas I sit very close to my 27-inch screen. Can people really tell a difference with 4K on a big-screen TV?
Many years ago somebody made a video about how 4K was unnecessary because the resolution of the human eye was not going to tell the difference. If it is unnecessary on a 55-inch TV, then it is probably unnecessary on a smartphone. I bought an iPhone 10R, which has a sub-1080P resolution, yet I never notice the resolution being too coarse.
Friday, November 18, 2022
Sprites
In computers and video games, a sprite is an image that can move on top of a background. Usually, these are 2D objects moving on top of a 2D background, although a game like the original Doom had 2D objects moving on top of a 3D background. The mouse pointer on a computer screen is technically a sprite.
Back in the days when computers and video games were 8-bit and 16-bit, it was helpful to have hardware support for sprites, which allowed graphical objects to move around independently of the background. The reason this was helpful was that it was more taxing for the old slow computers without hardware sprites to manipulate the graphics on the screen. When I was writing games for the Timex Sinclair 2068 and Atari ST computers, I had to write software to make all the graphics move because there was no hardware support for sprites, which makes the task more technically challenging.
The early arcade video games used hardware sprites and so did all early home video game consoles. The sprites on the Atari 2600 are extremely primitive and very difficult to program, but the programmers knew how to make them work.
Many people have touted the Commodore 64 as the best 8-bit computer because it had hardware support for eight 8x8 sprites, although this is not very many compared to the Nintendo Entertainment System that came out later. I think that the Atari 8-bit computer had better graphical capabilities overall.
Once we had 32-bit processors, there was no longer a need for hardware sprites. These systems were powerful enough that it was not a huge challenge to manipulate graphics on a screen. Also, with 32-bit systems, there was a greater emphasis on 3D graphics instead of 2D graphics.
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Best wishes,
John Coffey
http://www.entertainmentjourney.com
Monday, November 7, 2022
Monday, October 31, 2022
Wednesday, October 5, 2022
How many "computers" do we own?
I remember a prediction that goes back to the 1980s that went like this: Someday you will throw away computers because your house will be littered with them. You will get computers in cereal boxes. At the time this seemed pretty far-fetched.
I am not sure that I can count the number of "computers" in my house. I have at least four obsolete iPhones, four Arcade1up machines, a videogame joystick from twenty years ago that is still fun to play, a NES Classic videogame system, a Raspberry PI, two tablet computers, a laptop, a 2009 iMac that is only half working, a 2017 iMac, and a Fire TV stick. Technically, the dumb TV and Blu-Ray player that I have are also computers. I recently gave away an old tablet that was pretty useless.
Some devices like my two external hard drives and external DVD drive might have some sort of CPU in them, although I am not sure.
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Best wishes,
John Coffey
http://www.entertainmentjourney.com
I am not sure that I can count the number of "computers" in my house. I have at least four obsolete iPhones, four Arcade1up machines, a videogame joystick from twenty years ago that is still fun to play, a NES Classic videogame system, a Raspberry PI, two tablet computers, a laptop, a 2009 iMac that is only half working, a 2017 iMac, and a Fire TV stick. Technically, the dumb TV and Blu-Ray player that I have are also computers. I recently gave away an old tablet that was pretty useless.
Some devices like my two external hard drives and external DVD drive might have some sort of CPU in them, although I am not sure.
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Best wishes,
John Coffey
http://www.entertainmentjourney.com
Tuesday, October 4, 2022
Fire Tablets
Right now Amazon is selling some of their Fire Tablets at half price. Although they are budget tablets, not nearly as powerful as iPads, I am pretty impressed with the value for the price.
I have argued that if you have a good smartphone then you might not need a tablet, but I have enjoyed my Fire Tablet while traveling. They are more useful if you subscribe to Amazon Prime.
Saturday, October 1, 2022
Wednesday, September 28, 2022
Facebook and Craigslist scams
I have noticed that a few people have created new Facebook accounts because they said that their old account was hacked or there is a problem with it. In some cases, people say that they can no longer access their old accounts.
This can get confusing because there are also fake accounts that look like the original accounts. All of this is part of scams, for example, I had a 'friend' ask to borrow money. It is always strange when you get friend requests from people who are already friends, meaning that these new friend requests are likely from fake accounts. And if they are not fake accounts then you need to verify that these people are who they say they are.
So today I encountered a scam. One of the hacked accounts had been talking to me briefly for a few days making small talk. At first, I was fooled thinking that I was talking to my friend in Salt Lake City. Then today the account tried to pull a scam that went like this:
I was immediately suspicious. I have seen many scams as a seller on Craigslist that will claim that they want to verify your identity with a code number and that you have to message the code number back to them. What they are actually trying to accomplish is to do a password reset on your account, which requires a code verification, so if you give them the code then they will be able to change your Craiglist password and take over your account. Then they can use your account to scam other people.
So I realized this Facebook scammer was doing the same thing trying to take over my Facebook account. I contacted my friend on his new account and he verified that this other account was not him. However, I took this one step further. I told him that I didn't know which account was the real one, the old or the new, so I asked for his phone number so that I could call him and verify his identity. As soon as he answered the phone, I knew that I was talking to the real person.
I blocked the bad account and reported it to Facebook as someone impersonating a friend.
This can get confusing because there are also fake accounts that look like the original accounts. All of this is part of scams, for example, I had a 'friend' ask to borrow money. It is always strange when you get friend requests from people who are already friends, meaning that these new friend requests are likely from fake accounts. And if they are not fake accounts then you need to verify that these people are who they say they are.
So today I encountered a scam. One of the hacked accounts had been talking to me briefly for a few days making small talk. At first, I was fooled thinking that I was talking to my friend in Salt Lake City. Then today the account tried to pull a scam that went like this:
He said that he was trying to install Facebook on his phone, but he needed a code number to finish the installation. He said that Facebook required that the code be sent to a second phone number, which makes no sense, and asked if he could use my phone number. I had already inadvertently given this person my phone number because I had asked him to give me a call so that we could chat.
I was immediately suspicious. I have seen many scams as a seller on Craigslist that will claim that they want to verify your identity with a code number and that you have to message the code number back to them. What they are actually trying to accomplish is to do a password reset on your account, which requires a code verification, so if you give them the code then they will be able to change your Craiglist password and take over your account. Then they can use your account to scam other people.
So I realized this Facebook scammer was doing the same thing trying to take over my Facebook account. I contacted my friend on his new account and he verified that this other account was not him. However, I took this one step further. I told him that I didn't know which account was the real one, the old or the new, so I asked for his phone number so that I could call him and verify his identity. As soon as he answered the phone, I knew that I was talking to the real person.
I blocked the bad account and reported it to Facebook as someone impersonating a friend.
Never give a code number (or password) to a person in a message or email. It is a scam.
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Best wishes,
John Coffey
http://www.entertainmentjourney.com
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Best wishes,
John Coffey
http://www.entertainmentjourney.com
Thursday, September 22, 2022
Monday, September 19, 2022
New iPhone
My new iPhone came with a USB-C type lighting cable, but no charger. Those bastards.
All my old lightning cables and chargers are USB-A. I almost ordered a USB-C charger, but why bother just to be able to use the cable that came in the box?
I'm having trouble setting up the new iPhone, so I will have to finish tonight. However, FACE-ID works and I think that this is awesome. The fingerprint system never worked for me.
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Sunday, September 18, 2022
New iPhone and screen resolution
Recently, I cracked my iPhone 6s+ screen for the third time. I should be getting a new iPhone in the mail tomorrow.
The 10R is an ultra cheap version of the iPhone 10. I'm going from a 5.5 inch 1080P screen to a 6.1 inch 828P screen. Apple claims that this is a Retina Display, but it is only barely so. I was a bit annoyed when they came out with this phone four years ago, because it was inconceivable to me that Apple would go less than 1080P.
I've been arguing for a while that screen resolution is overrated. This will put my claim to the test.
For example, I tried playing videos and video games at various resolutions from 720P to a whopping 4K and 5K. Anything above 1080P is really hard for me to tell the difference. I like 1080P video the best, although 720P video is not terrible, but for a computer monitor I prefer 1440P. My 2017 iMac has a fantastic 5K display, but for a 27-inch screen this seems like overkill.
Best wishes,
John Coffey
The 10R is an ultra cheap version of the iPhone 10. I'm going from a 5.5 inch 1080P screen to a 6.1 inch 828P screen. Apple claims that this is a Retina Display, but it is only barely so. I was a bit annoyed when they came out with this phone four years ago, because it was inconceivable to me that Apple would go less than 1080P.
I've been arguing for a while that screen resolution is overrated. This will put my claim to the test.
For example, I tried playing videos and video games at various resolutions from 720P to a whopping 4K and 5K. Anything above 1080P is really hard for me to tell the difference. I like 1080P video the best, although 720P video is not terrible, but for a computer monitor I prefer 1440P. My 2017 iMac has a fantastic 5K display, but for a 27-inch screen this seems like overkill.
Best wishes,
John Coffey
Saturday, September 17, 2022
VP9 vs h264 & other Codecs » How it Fares Against Competition | Bitmovin
https://bitmovin.com/vp9-codec-status-quo/
I am using an extension to Chrome that forces Youtube to use the h264 video format (codec) instead of VP8/VP9. (https://chrome.google.com/webstore/detail/h264ify/aleakchihdccplidncghkekgioiakgal)
Why is this an issue?
Some newer graphics cards support the decoding of VP8/VP9, which is a more efficient standard. However, it is not supported in hardware on older computers like my 2017 iMac nor all the iPhone Models. These devices have hardware support for H264, meaning that H264 is easier to decode, and won't slow your device, won't make it as hot, nor use as much power.
Your web browser can decode VP8/VP9, but your device may not have hardware support for it. If speed and battery life aren't an issue then it doesn't matter, and VP8/VP9 will likely use less Internet bandwidth. If I were using a laptop, I would probably want this extension.
It is possible that most people won't notice a difference either way. I do a lot of stuff on my computer so it might take a difference.
Wednesday, September 14, 2022
Sunday, September 4, 2022
The things AMD DIDN’T tell us…
I've been waiting for this next generation of AMD chips. I would prefer a new APU that would allow graphics on the same chip, but reportedly this is coming out next year. The 7950x is 8 times more powerful than my desktop computer.
Friday, August 26, 2022
Saturday, July 2, 2022
Build a PC while you still can
https://www.youtube.com/watch?v=LFQ3LkVF5sM
I'm not sure that I agree. Although I have been waiting for the next AMD APU, having your graphics and processor on one chip gives you no versatility. Apple achieved outstanding performance by having CPU, graphics, and memory all on the same M1 chip, which increased efficiency, but there is only so much that you can put on a CPU die, and there is no upgrade path except to buy a new computer.
Saturday, June 25, 2022
NO other PC can match it for $4,000? - M1 Ultra Mac Studio review
https://www.youtube.com/watch?v=8YjMIjLLIwA&t=950s
Apple is the first to the market with really powerful 5-nanometer chips, but AMD and Intel aren't far behind.
Thursday, June 23, 2022
Saturday, June 18, 2022
Puzzle Leaderboard - Chess Rankings - Chess.com
https://www.chess.com/leaderboard/tactics?page=171
I'm #8540 on the chess.com puzzle ratings. I was expecting that the top ratings would not go too high, but I was wrong. The top three ratings are all 65540, which for the reasons I give below, I suspect is the highest possible rating.
I find this 65540 number suspicious because the top three ratings are this number. The maximum value that can be stored by a 16-bit number is 65536. If you want to save storage space, why use a 32-bit or a 64-bit number to store ratings when a 16-bit number would do? The 65540 number almost fits. You can make it fit by making the lowest possible rating the number 5. Why would you set a lower limit on the rating? To not accidentally run into a divide by zero problem, which can crash computer code, or other mathematical oddities from having a low or negative number in your equation.
Tuesday, June 14, 2022
Re: Watch "Apple just killed M1 - WWDC 2022" on YouTube
I have a big side note here. Microprocessor instructions are either 8-bit or more likely 16 bits long. Each instruction represents a particular action to be taken by the microprocessor in machine code. A typical machine code instruction might be to add one register's value to another and put the result in a specified location. This would be the equivalent of the "add to memory" button on a calculator.
x86 processors are Complex Instruction Set Computers (CISC), where Arm processors are Reduced Instruction Set Computers. RISC tries to be more efficient by doing fewer things faster. There is a 30-year-old battle of architecture between RISC and CISC, and right now RISC is winning.
I wonder if there might be a better way. I have long imagined a 16-bit or longer instruction where each bit represents a particular action to be taken by the microprocessor. For example, one bit might be to fetch data from memory, and another bit might be to fetch data from a register, and a third bit might be to add them together. On a 64-bit processor with a 64-bit data bus, there would be no problem having 64 individual bits each presenting a particular action to be performed. Such a system might allow the combining of actions in novel ways or the performing of some actions in parallel, increasing efficiency.
On Tue, Jun 14, 2022 at 6:05 PM John Coffey <john2001plus@gmail.com> wrote:
I've seen parts of this before. M1 is alive and well. M2 is a more powerful design, but only marginally better than M1, and only will be available initially on a couple of platforms. I would choose M2 over M1, but I would rather have a 5 nano-meter x86 chip, likely an AMD APU.The current generation AMD 5700G would check most of my boxes. It has a PassMark score of 20K compared to 6K of the i5-7500 on my 2017 iMac, and the roughly 14.6K Pasmark Score of the M1. BTW, your laptop scored around 10K, but that is still noticeably better than my desktop. My first priority was to get a more powerful processor and the 5700G certainly fits the bill. However, the graphics capability is around 900 gigaflops, compared to about 3.6 Teraflops on my iMac and 12 Teraflops on the Xbox series X which uses a custom AMD APU. In other words, it is not a gaming powerhouse.I could buy a 5950x with no graphics, which gets a PassMark score of around 40,000. Then I would have to buy a graphics card.So there are very strong rumors, which AMD has mostly confirmed, that they are coming out with a "Phoenix" line of APU processors that have much more graphics capability comparable to or surpassing some lower-end graphics cards. This is what I am waiting for.--On Mon, Jun 13, 2022 at 11:19 PM Alberr wrote:This is a good overview of the Apple M2 chip and other Apple upgrades. The new chip is very impressive and will probably have Intel and AMD trying to do something similar in the future.
Friday, June 3, 2022
This Sneaky TV Setting Will RUIN Your Picture Quality
I don't know if this applies to any of the TVs that I purchased. It is worth investigating.
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