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why do we need different mental layers for CMOS technology?

Discussion in 'Electronic Design' started by lixiaoyao, Apr 19, 2007.

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  1. lixiaoyao

    lixiaoyao Guest

    Hi all
    I have a few confusion about CMOS mental layer,
    First, why do we need different mental layer in CMOS techonlogy?
    Like Mental 1, mental 2, it seems mental 1 is enssence and I do not
    know what is the usage of mental 2. It seems there exists mental layer
    3 in mosis and have 8 or 9 mental layer for inter or AMI, can anyone
    explain what is the advantage of them. What is the usage of different
    mental layers?
    Second, In fact, which mental layer connects the outside circuit? I
    guess it is mental 3 in mosis, am I right?
    Thanks a lot
  2. Not mental, metal.

    Mental: involving the mind or an intellectual process; "mental images of
    happy times"; "mental calculations"; "in a terrible mental state"; "mental
    suffering"; "free from mental defects"

    Metal: metallic element: any of several chemical elements that are usually
    shiny solids that conduct heat or electricity and can be formed into sheets
  3. John Larkin

    John Larkin Guest

    Just like a multilayer PC board. You need lots of layers to make all
    the interconnects and do the power and clock distribution.

  4. Robert Baer

    Robert Baer Guest

    Mental layers control the thinking...
  5. Meat Plow

    Meat Plow Guest

    The more mental layers, the easier it is to think up CMOS designs.

    #1 Offishul Ruiner of Usenet, March 2007
    #1 Usenet Asshole, March 2007
    #1 Bartlo Pset, March 13-24 2007
    #10 Most hated Usenetizen of all time
    Pierre Salinger Memorial Hook, Line & Sinker, June 2004
  6. Jim Thompson

    Jim Thompson Guest

    Sno-o-o-o-ort !-)

    ...Jim Thompson
  7. MassiveProng

    MassiveProng Guest

    A form of protecting one's IP. :p
  8. Donald

    Donald Guest

    What did you expect from gmail !
  9. lixiaoyao

    lixiaoyao Guest

    Yes. I made a typo, could anyone answer my question?
  10. Donald

    Donald Guest

    Even without the typo, I (we) thought this was a joke.

    All chip technologies has multiple metal layers.

    Google or your professor can help you.

  11. lixiaoyao

    lixiaoyao Guest

    Stop to be mean, here is a place to ask question, right? DO you know
    everything before you learn. You are a so mean person.
  12. Why does Chinese music sound off key?
  13. Jim Thompson

    Jim Thompson Guest

    That's always been a puzzle to me... since the only other use of the
    pentatonic scale is Scottish music.

    ...Jim Thompson
  14. dOn Fri, 20 Apr 2007 17:07:47 GMT, the renowned "Homer J Simpson"
    Because it's (usually & traditionally) in pentatonic scale?

    Best regards,
    Spehro Pefhany
  15. "The Irish were Egyptians long ago" - or the Scots were Chinese?
  16. Guest

    No, that wasn't meanness. That was "humor". You are obviously new to
    usenet or you'd have grown a sense of it by now. Or not, but I find it

    Did you notice Don's last line?

    If you don't have a professor, we see you use Google's Gmail. We
    also assume you have some skill using the Google search engine. As
    another example of American humor; that skill is often called Google-
    fu, but it isn't at all derogatory.

    How strong is your Google-fu?

    I ask because the regulars here will _help_ you learn, but they
    mostly would also like to know you know _how_ to learn. That's another
    kind of -fu, and we don't know how far advanced you are.

    So, what have you done so far, and what book or website example can
    you cite of exactly what you don't get?

    Mark L. Fergerson

  17. Generated by
    Location: United States [City: College Park, Maryland]

    OrgName: University of Maryland
    OrgID: UNIVER-262
    Address: Office of Information Technology
    Address: Patuxent Building
    City: College Park
    StateProv: MD
    PostalCode: 20742
    Country: US

    NetRange: -
    NetName: UMD-BOGON-NET
    NetHandle: NET-129-2-0-0-1
    Parent: NET-129-0-0-0-0
    NetType: Direct Assignment
    NameServer: NOC.UMD.EDU
    NameServer: NS1.UMD.EDU
    NameServer: NS2.UMD.EDU
    NameServer: NASANS4.NASA.GOV

    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
  18. The Scots couldn't afford all 8 tones.
  19. whit3rd

    whit3rd Guest

    Maybe all the modern ones do. The old mustard-colored
    TTL handbook had lots of schematics, and each was carefully
    drawn with no wire crossings. Because that's how they
    were designed, on account of there wasn't any second
    metal layer.

    Crossovers COULD use a low-value resistor (base resistor) but
    that took up area, and it was considered a last resort. The
    transistor bases were natural crossover opportunities, so you'd
    see lots of transistors with wires attaching to the base from
    left and right...
  20. But there are only two tunes for the bagpipes.
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