Cell Definition and 956 Threads

Cell is a multi-core microprocessor microarchitecture that combines a general-purpose PowerPC core of modest performance with streamlined coprocessing elements which greatly accelerate multimedia and vector processing applications, as well as many other forms of dedicated computation.It was developed by Sony, Toshiba, and IBM, an alliance known as "STI". The architectural design and first implementation were carried out at the STI Design Center in Austin, Texas over a four-year period beginning March 2001 on a budget reported by Sony as approaching US$400 million. Cell is shorthand for Cell Broadband Engine Architecture, commonly abbreviated CBEA in full or Cell BE in part.
The first major commercial application of Cell was in Sony's PlayStation 3 game console, released in 2006. In May 2008, the Cell-based IBM Roadrunner supercomputer became the first TOP500 LINPACK sustained 1.0 petaflops system. Mercury Computer Systems also developed designs based on the Cell.
The Cell architecture includes a memory coherence architecture that emphasizes power efficiency, prioritizes bandwidth over low latency, and favors peak computational throughput over simplicity of program code. For these reasons, Cell is widely regarded as a challenging environment for software development. IBM provides a Linux-based development platform to help developers program for Cell chips.

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  1. Char. Limit

    Cell Phone Automotive Usage Thoughts?

    http://www.wrcbtv.com/Global/story.asp?S=12166928 http://www.businessweek.com/ap/financialnews/D9ED5BI00.htm http://www.heraldnet.com/article/20100313/NEWS01/703139877&news01ad=1 http://www.kimatv.com/news/local/87601672.html http://blogs.zdnet.com/cell-phones/?p=3263 I think the...
  2. E

    Solar Cell Connectivity Problems: Low Current Output

    I tried connecting my solar cell, 7V/100mA to the ammeter. What I got is 1mA. Why? The voltage part is 6V, so I assume the efficiency should be at least around 6/7*100 %. But why is it only 1mA? I connected the solar cell straight to the ammeter. I need help fast. Thank you.
  3. W

    Building Solar Cell Battery Light

    Hello. As a memorial I am trying to build a light-sensitive unit that will make an LED continuously glow at night. I want to put this in an extremely remote place and be reasonable confident that it will continue to operate indefinitely. The idea is that once it becomes dark, a photodiode will...
  4. lisab

    Medical How Long Does It Take for Red Blood Cell Count to Normalize After Blood Loss?

    If a person loses enough blood to become moderately anemic, how long does it take for the red blood cell count to return to normal? I mean roughly...would it be on the order of days, weeks, or...? Is daily iron intake a typical limiting factor in this process?
  5. T

    Why is the cell prefer K+ over Na+

    im asking this because chemically they are very similar, and the only big difference i see is that potassium is much larger. i got the details for mammalian cell typical ion concentrations and it is such: inside outside (mM) K+ 5-15 145...
  6. S

    How Do You Calculate the Volume of a Wigner-Seitz Cell in an FCC Lattice?

    I have a few questions, first of all I'm trying to figure out how to find the volume of a 3 dimmensional wigner sietz cell. I have the 8th edition intro to solid state physics book by charles kitle and there is no where in the book that shows me how to find the volume of wigner seitz cell...
  7. rhody

    Cool PC to Cell Phone Text Utliity

    Go to: http://www.txt2day.com/" Enter the 10 digit phone number, no dashes Return e-mail (optional) You select the destination cell phone's provider Normal tweet text message Answer the anti-spam question (don't forget or the message won't be sent) Press send... That's it... Rhody...
  8. G

    How do I send an email from my cell phone?

    How do I type in an e-mail address on a cell phone (are the letters just the numbers just as when dialing)?
  9. E

    Flash Camera Cell Phone Problem

    Hello, I have a Nokia 6300i cell phone with double flash camera. The camera's flash was just working fine in the begining, then in one day I tried to capture a photo in the night with flash turned to automatic and it did not work. Then, I turned the flash to be on all the time, but useless...
  10. G

    Comparing Cell Potentials of ZnSO4/CuSO4 Solutions

    What are the cell potentials of the following? 1) ZnSO4 (1M) & CuSO4 (1M) 2) ZnSO4 (1mM) & CuSO4 (1mM) 3) ZnSO4 (0.1M) & CuSO4 (1M) I tried using the nearst equation and I keep getting that they are all the same value of +1.10V
  11. R

    Diffusion across a cell membrane?

    Hi, I'm looking for information on blood and neuron cells. Specifically I need to know how the membrane transport mechanism in blood and neuron cells work? I am aware of concepts such as active diffusion, facilitated diffusion, and simple diffusion. The task is to look at the membrane...
  12. D

    Dry Cell Batteries: Chemical Reactions Involved

    i was wondering what are the chemical reactions involved in producing the electricity, that the batteries provide i.e. the reductant and the oxidant
  13. A

    Cell Phone Power Output: Understanding Microwave Transmitter Signal Strength

    To send a signal, how much power does the microwave transmitter use?
  14. M

    Copper wire attached to the terminals of a cell

    A diagram shows a flexible copper wire attached to the terminals of a dry cell. A strong circular magnet, 12 mm in diameter, is attached to the side of the cell. The interaction between the current in the wire and the magnetic field of the magnet causes the wire to levitate i.e. _____+ l...
  15. S

    Fuel cell stack model in femlab 3.1

    i am learning femlab 3.1...so following the model library given with the set of books.. but i am facing problems with the 3 d modelling.. as in case of fuel cell stack model..the solver is unable to solve even if all the steps are followed according to given instructions.. i have double...
  16. G

    Biology Calculating Probability of Sickle Cell Disease for Karen & Steve's Child

    1. Karen and Steve each have a sibling w/ sickle-cell disease. Neither Karen nor Steve nor any of their parents have the disease, and none of them have been tested to reveal sickle-cell trait. Based on this incomplete information, calculate the probability that if this couple has a child, the...
  17. G

    Rhombohedral primitive cell on FCC

    How do you determine a plane or a point on a crystal lattice when translated to a rhomboidal primitive cell. For example, rhombohedral primitive cell for an FCC is defined as: a_1 = 1/2 a*(x+y); a_2=1/2*a(y+z); a_3=1/2*a(z+x); If we have a plane, for example the 111 plane on an FCC, how...
  18. T

    How do I know where each component of a reaction goes within a galvanic cell?

    Trying to teach myself electrochemistry out of a textbook and it's kind of confusing at some parts without any teacher to ask questions, but I think I'm doing a pretty good job. I've got a test tomorrow on this stuff and I'm kind of burned out from studying (about 20 hours in the past 4 days) so...
  19. G

    How is it made only one cell to pass through an aperture ?

    The question is related to impedance cell counting, determining cell`s size etc. This method is working like this: "A small portion of the diluted fluid in each bath is allowed to flow past a small aperture. An electrical current is produced in each aperture by two electrodes, one on the...
  20. H

    Conversion of Internal Combustion Engine Vehicle to Hydrogen Fuel Cell Vehicle

    I’m from a group that is current working on the theory of a Hydrogen Economy. Our first area of development is the Hydrogen Highway. We are currently seeking help in the form of freelance / work for hire basically engineer(s) that could aid in design and calculations of internal combustion...
  21. S

    Cell Turnover Rates: Find Organ/Tissue/Cell Rates

    I've heard that the human body completely renews all of its cells in seven years; the pancreas in 24 hours. I've been trying to find a website that lists the turnover rates for each organ, tissue or type of cell. If anyone has a link or a book with that kind of information, let me know...
  22. Math Is Hard

    Text messages vs. cell phone calls

    My mother has always insisted that I have a cell phone with text capability. She says that she's heard that sometimes when cell phone service is not available, people will still be able to send text messages. I believe she's thinking that after a natural disaster, like an earthquake, all the...
  23. S

    Problems with solar cell efficiency

    As the solar cell gets further away from the light source, does it get more efficient or less efficient? At the moment I am able to work out how much power enters the solar cell. However, it is pretty weird because as I found out from my experiment, the efficiency of the solar cell gets better...
  24. Pengwuino

    Cell phones causing cancer goes national

    http://www.msnbc.msn.com/id/34502456/ns/health-cancer/ Maybe this is the excuse I need to tell people to stop calling me with meaningless dribble.
  25. S

    Calculating Power from Lux of a Solar Cell

    Is there are way to find out power from lux entering a solar cell? I currently have the area of a solar cell 127.2 cm square, and the lux reading 8434 lux I have heard of the equation watts per metre square. However that's not the equation for lux right?
  26. W

    Silver-Cadmium Electrochemical Cell

    You are given the following materials:  Silver wire  A 0.10 mol L-1 solution of cadmium nitrate  Cadmium wire  A 0.10 mol L-1 solution of silver nitrate  A salt bridge  Copper wire  Beakers and other glassware as required Draw a labelled sketch of your cell. Describe...
  27. G

    Charging lithium-ion cell from a current limited voltage source

    I want to charge a single lithium-ion cell from a current-limited voltage source. My "black box" (or rather, it's white -- with a question mark inside) has inputs of ~250mA @ [3.7V to 5.4V], and target output (i.e., the lithium-ion cell) of 3.2V to Vch = 4.2V. Which means: I can't charge the...
  28. H

    Current limitation through multijunction solar cell

    Hi, I've been reading up on multijunction solar cells and found out that since the different layers are connected in series the photo generated current through them must be adjusted so it is the same for each layer to conserve efficiency. Why is that? thanks.
  29. K

    Control a motor remotely with cell phone signals

    Hey Guys, I'm a mechanical engineer (please forgive my ignorance) with an electrical engineering problem. I'm trying to control a small DC motor with speed and duration controls using a remote cell phone. I might also like the ability to receive temperature data from the motor back at the...
  30. E

    Solar Cell Physics Coursework (Calculating Internal Resistance)

    Basically I want to Calculate the internal resistance of a solar cell. I set up a circuit with a voltmeter across the solar cell and an ammeter and variable resistor in series with the solar cell. The variable resistor is the load. Image at...
  31. MacLaddy

    Cell Phone Disruption During Power Surges: Exploring the Possible Causes

    Pacing in my office this afternoon, talking with my dear old mother on my cell phone; I happened to observe a brief power outage. A bump, or surge, if you will. It was a loud buzz (no transformer around me that I know of), lights went out, and strangely enough it knocked out my cell phone. I...
  32. T

    Exploring the Wonders of Electromagnetic Technology on Cell Phones

    I was using my iPhone when I got to thinking about how amazing it is that so much information can be transferred all with electromagnetism. I was in a room with 500 other iphones and I could not connect at all. is this because AT&T could not support 500 people on the same tower? if someone...
  33. M

    Unit Cell Volume of Cadmium (HCP)

    Homework Statement Q 2. (a) For the HCP crystal structure, show that the ideal c/a ratio is 1.633. (10%) (b) Hence, calculate the unit cell volume of cadmium with a HCP structure and atomic radius of 0.1490 nm. Assume that the lattice period is equal to two times of the atomic radius...
  34. N

    Cell Stoichiometry: Mass of Na Deposited in 2h

    Homework Statement Determine the mass of sodium deposited at the cathode of a molten NaCl(l) electrolytic cell if 10.0 A flow through the cell for 2.00h. Homework Equations The Attempt at a Solution For the mole ratio, Na+ +e --> Na 2Cl- --> Cl2 + 2e Should I balance the...
  35. A

    Related Rates Cell Phone Problem

    Homework Statement The average cost per item, C, in dollars, of manufacturing a quantity q of cell phones is given by the following equation, where a and b are positive constants. C = a/q + b (a) Find the rate of change of C as q increases. Include units. I already found this, it's: -a/q^2...
  36. L

    Advice on what cell phone to get

    Have totally confused myself looking on line for a good phone. I was excited about jitterbug because it was simple and seemingly made for exactly our family needs. However the reviews leave me thinking I should ask advice. We need two Very Simple phones with a simple service. In the NY area...
  37. D

    Affordable Solar Cell for Sunblock Experiment | UV Light & Electricity

    I'm looking for a cheap solar cell for an experiment that we're doing on different sunblock lotions. Will a clear sunblock lotion (say spf 50) affect the ability for a common solar cell to produce electricity? If the answer to the first question is no, is there a solar cell that does use...
  38. W

    How Do You Calculate Cell Potentials for Electrochemical Couples?

    Homework Statement Calculate the potential of a Zn^2+/Zn and Ag^1+/Ag couple. Homework Equations Zn^2+ + 2e^1– ⇌ Zn E= –0.76 V Ag^1+ + e^1– ⇌ Ag E= +0.80 V The Attempt at a Solution First I know to multiply the silver half reaction by...
  39. A

    Embryonic Stem Cell Research Ethics

    OK, here's the deal: I was wondering, "what is the general opinion, ethically, on embryonic stem cell research?" so, I made a poll When you vote, use your own opinion, and afterwards, post what you voted and why. please be informed, or don't vote/post.
  40. P

    "Cell Division: Is Mitosis the Same?

    Homework Statement Is mitosis the same as cell division? Homework Equations The Attempt at a Solution I want to say yes because mitosis is a type of cell division and when you speak of mitosis, it's usually referred to cell division. However, mitosis doesn't include all of cell...
  41. J

    Circuit for determining the internal resistance of a dry cell

    What sort of circuit would I have to set up to figure out the internal resistance of a dry cell? Also, what would i need to be measuring and doing etc, to find this internal resistance? Thanks, Jack.
  42. S

    What Are the Solar Panel Requirements for Meeting the US' Electrical Needs?

    Homework Statement Current solar-panel technology has the efficiency of converting 12% of the solar energy to electricity. Given that on a sunny day in Arizona the average solar radiation energy flux is 1.0 kW/m^2 , and that the area of Arizona is 3.0 × 10^5 km^2 , 1. What percentage of...
  43. M

    (Bio) Why are carbohydrates almost never on the INSIDE of the cell membrane?

    Homework Statement Explain why carohydrates are found attached to integral membrane proteins on the outside, but almost never on the inside (cytoplasmic face) of cell membranes. Homework Equations -----------The Attempt at a Solution Carbohydrates bond with integral membrane proteins on the...
  44. I

    Load Cell Accuracy | Capacity >200Kg | 10g or Better Accuracy

    Hi Everyone, I've been trying to find a load cell for a report and I need one with a maximum capacity of >200Kg and and accuracy of 10 grams or better (used in compression). I've taken a look on the web and the highest accuracy I can find is about 0.03% of the maximum capacity; which with a...
  45. W

    Finding Probabilities of Cell Generations

    Homework Statement 20. The probabilities that a certain type of cell produces during its lifetime 0,1,2 cells of the first generation are 1/4 , 1/2, 1/4, and any cell of the first generation produces cells of the second generation under the same conditions. Find the probabilities...
  46. O

    Do I Need a Resistor to Lower Voltage for a Solar Cell Phone Charger?

    I'm planning on making a simple solar powered cell phone charger for a demonstration speech in my gen-ed speech class because it seemed like it would be fun at least. The best solar panel I could find for cheap has an output of 6v and 50 mA. My cell phone charger has an output of 5.0v and 700...
  47. F

    Capacitance of a spherical cell

    Homework Statement A cell membrane is composed of lipid molecules and approximately 10.29 nm thick. If the dielectric constant of the lipid is kappa= 5 , what is the approximate capacitance of a spherical cell that has a diameter of 10.29 micro meters? Homework Equations E=KQ/r^2...
  48. G

    Which Electrode is the Cathode in Wade and Tang's Galvanic Cell?

    Homework Statement Two learners, Wade and Tang are working together on a project. They were asked by their teacher to assemble a galvanic cell that would produce a large enough voltage to light up a 1.5V bulb. They are allowed to use two electrodes, one of which must be a zinc electrode...
  49. N

    Light absorption in solar cell.

    Hi, I am designing an amorphous silicon solar cell and i wanted some pointers on how I should calculate the width of the intrinsic layer to get maximum absorption of light into my cell. I have designed my cell with the doping concentrations of p and n layer as 10^18 and 10^15 respectively.
  50. D

    Finding angle in cell phone using accelerometer

    I am using a cellphone with 2 accelerometers in it. So, in all I have 2*3 readings from accelerometer ( 3--> x,y, z axis). I am trying to find the orientation (up and down) and the tilt/angle of the cell phone. The cell phone won't be kept in the horizontal surface, instead it would be rotated...
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