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Modern Airplane Engines are so Powerful that they Have Become Dangerous
นอกจากการดูบทความนี้แล้ว คุณยังสามารถดูข้อมูลที่เป็นประโยชน์อื่นๆ อีกมากมายที่เราให้ไว้ที่นี่: ดูความรู้เพิ่มเติมที่นี่
Welcome back to the Fluctus Channel for a feature on the increasingly powerful aircraft engines that entails a number of unexpected dangers, and how the aviation industry strives to develop technologies to improve safety and flight efficiency.
What is a Core i3, Core i5, or Core i7 as Fast As Possible
What the heck is the difference between a Core i3, Core i5, and Core i7?? What do these terms mean?
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Core Definition
Core Definition
💻 – See How a CPU Works
Uncover the inner workings of the CPU.
Author’s Website: http://www.buthowdoitknow.com/ See the Book: http://amzn.to/1mOYJvA
See the 6502 CPU Simulation: http://visual6502.org/JSSim/index.html
For anyone annoyed by the breaths between speaking, try this unlisted version with edited audio: https://www.youtube.com/watch?v=IkdBs21HwF4
Download the PowerPoint file used to make the video: https://docs.google.com/file/d/0BzwHNpicSnW0cGVmX0c3SVZzMFk
The CPU design used in the video is copyrighted by John Scott, author of the book But How Do It Know?.
There are a few small differences between the CPU in the video and the one used in the book. Those differences are listed below but they should not detract from your understanding of either.
CONTROL UNIT This component is called the Control Section in the book. It is called Control Unit here simply because that is a more common name for it that you might see used elsewhere.
LOAD INSTRUCTION In this video, what’s called a LOAD instruction is actually called a DATA instruction in the book. The Scott CPU uses two different instructions to move data from RAM into the CPU. One loads the very next piece of data (called a DATA instruction in the book) and the other uses another register to tell it which address to pull that data from (called a LOAD instruction in the book). The instruction was renamed in the video for two reasons: 1) It might be confusing to hear that the first type of data we encounter in RAM is itself also called DATA. 2) Since the LOAD instruction from the book is a more complex concept, it was easier to use the DATA instruction in the video to introduce the concept of moving data from RAM to the CPU .
IN and OUT INSTRUCTIONS In the Scott CPU, there is more involved in moving data between the CPU and external devices than just an IN or an OUT instruction. That process was simplified in the video to make the introduction of the concept easier.
ACCUMULATOR The register that holds the output of the ALU is called the Accumulator in the book. That is the name typically used for this register, although it was simply called a register in the video.
MEMORY ADDRESS REGISTER The Memory Address Register is a part of RAM in the book, but it is a part of the CPU in the video. It was placed in the CPU in the video as this is generally where this register resides in real CPUs.
JUMP INSTRUCTIONS In the book there are two types of unconditional JUMP instructions. One jumps to the address stored at the next address in RAM (this is the one used in the video) and the other jumps to an address that has already been stored in a register. These are called JMP and JMPR instructions in the book respectively.
MISSING COMPONENT There is an additional component missing from the CPU in the video that is used to add 1 to the number stored in a register. This component is called \”bus 1\” in the book and it simply overrides the temporary register and sends the number 1 to the ALU as input B instead.
REVERSED COMPONENTS The Instruction Register and the Instruction Address Register are in opposite positions in the diagrams used in the book. They are reversed in the video because the internal wiring of the control unit will be introduced in a subsequent video and keeping these registers in their original positions made that design process more difficult.
OP CODE WIRING The wires used by the control unit to tell the ALU what type of operation to perform appear near the bottom of the ALU in the video, but near the top of the ALU in the book. They were reversed for a similar reason as the one listed above. The wiring of the ALU will be introduced in a subsequent video and keeping these wires at the top of the ALU made the design process more difficult.
CORE – Meaning and Pronunciation
How to pronounce core?
This video provides examples of American English pronunciations of core by male and female speakers.
In addition, it explains the meaning of core through a dictionary definition and several visual examples.
IPA Transcription of core is /kˈɔːr/.
Definition of core according to Wiktionary:
core can be a noun, a verb or a name
As a noun core can mean:
1. The central part of fruit, containing the kernels or seeds.
2. The heart or inner part of a physical thing.
3. The center or inner part of a space or area.
4. The most important part of a thing; the essence.
5. The portion of a mold that creates an internal cavity within a casting or that makes a hole in or through a casting.
6. The bony process which forms the central axis of the horns in many animals.
7. Magnetic data storage.
8. An individual computer processor, in the sense when several processors (called cores or CPU cores) are plugged together in one single integrated circuit to work as one (called multicore processor).
9. The material between surface materials in a structured composite sandwich material.
10. The inner part of a nuclear reactor in which the nuclear reaction takes place.
11. A piece of ferromagnetic material (i.e. soft iron), inside the windings of an electromagnet, that channels the magnetic field.
12. A disorder of sheep caused by worms in the liver.
13. A cylindrical sample of rock or other materials obtained by core drilling.
14. A tiny sample of organic material obtained by means of a fineneedle biopsy.
15. The central part of a protein structure consisting in mostly hydrophobic aminoacids.
16. The set of feasible allocations that cannot be improved upon by a subset (a coalition) of the economy’s agents.
17. A hollow cylindrical piece of cardboard around which a web of paper or plastic is winded.
18. An atomic nucleus plus inner electrons (i.e. except valence electrons).
19. A body of individuals; an assemblage.
20. A miner’s underground working time or shift.
21. A former Hebrew and Phoenician unit of volume.
22. A deposit paid by the purchaser of a rebuilt part, to be refunded on return of a used, rebuildable part, or the returned rebuildable part itself.
As a verb core can mean:
1. To remove the core of an apple or other fruit.
2. To extract a sample with a drill.
As a name core can mean:
1. The birth name of Persephone/Proserpina, the queen of the Underworld/Hades, and goddess of the seasons and of vegetation. She is the daughter of Zeus and Demeter, and the wife of Hades.
2. Given name.
If you’d like to test your pronunciation of core, check out Accent Hero’s realtime pronunciation feedback tool:
https://accenthero.com/app/pronunciationpractice/english/american/core
or our Android app:
https://play.google.com/store/apps/details?id=com.accenthero.com
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