Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Stars vs. transistors ?

  1. Oct 13, 2012 #1
    This thing just popped into my head last night while describing to a friend, possible end of our universe.

    Which one is higher? the number of stars in our universe or the number of MOSFETs we mass-fabricated in our civilization ?

    My guess is though number of stars. What do you think? (consider current number of MOSFETs should be also an intimidating number.)

    Any rough statistics on this matter will also be very enlighting.
     
  2. jcsd
  3. Oct 13, 2012 #2

    Drakkith

    User Avatar

    Staff: Mentor

    The number of stars is unknown, but could be infinite.
     
  4. Oct 13, 2012 #3
    I think you underestimate the number of stars in universe. Supposedly there is about 10^22 -10^24 stars (see below). I don't know how many MOSFETs have people ever produced. Say a high-end CPU has a few million gates. (10^7). People have produced ~10 billion processors (10^10) so you are somewhere around 10^17, say 10^20 with other electronics, which is still a few orders less then the number of stars.

    Did I get the orders right? :confused:

    Wikipedia: Observable universe
     
  5. Oct 13, 2012 #4
    Last edited: Oct 13, 2012
  6. Oct 13, 2012 #5
    On the basis of the numbers presented, MOSFETs win or soon will.

    There are 6.8 billion transistors in a large FPGA. A large Intel server processor has upwards of 2.5 billion. 8 gigs of ram? More than 8 billion.

    Such ICs (together with many more smaller ones) are fabricated by the billions per year and are fielded for many years.
     
  7. Oct 14, 2012 #6
    @FailedLaunch - I did not underestimate star count, haha. You can read my answer in the first post.

    That link was good. However, there's a much better link (arranged in tabular form) somewhere I dont remember now.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Stars vs. transistors ?
  1. Transistor ? (Replies: 2)

  2. Transistor as a relay (Replies: 3)

  3. Transistor biasing (Replies: 11)

Loading...