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greenstone1

ball grid array assembly - 1 views

www.greenpcba.com/bga-pcb-assembly

ball grid array assembly

shared by greenstone1 on 13 Jan 23 - No Cached
  • greenstone1 on 13 Jan 23
     
    A ball grid array (BGA) is a type of surface-mount packaging (a chip carrier) used for integrated circuits. BGA packages are used to permanently mount devices such as microprocessors. A BGA can provide more interconnection pins than can be put on a dual in-line or flat package. The whole bottom surface of the device can be used, instead of just the perimeter. The traces connecting the package's leads to the wires or balls which connect the die to package are also on average shorter than with a perimeter-only type, leading to better performance at high speeds.
Zoran Sargent

Long Term Loans Canada - Get Over with Financial Crunches Efficiently - 0 views

longtermloanscanada.tumblr.com/...financial-crunches-efficiently

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shared by Zoran Sargent on 26 Feb 16 - No Cached
  • Zoran Sargent on 26 Feb 16
     
    An array of purposes from personal to household can be solved with the help of the money provided to the individual through this scheme of Long term loans. It helps in offer a quick solution to the people to deal with the surprising need of the individual.
Benx Shen

A re-introduction to JavaScript - MDC - 1 views

developer.mozilla.org/..._re-introduction_to_JavaScript

javascript tutorial intro *精華* *i_love_it*

shared by Benx Shen on 14 Oct 09 - No Cached
  • var name = o && o.getName();
  • var name = otherName || "default";
  • The first argument to apply() is the object that should be treated as 'this'.
  • ...9 more annotations...
  • apply() has a sister function named call, which again lets you set 'this' but takes an expanded argument list as opposed to an array.
  • Closures
  • A closure is the combination of a function and the scope object in which it was created. Closures let you save state - as such, they can often be used in place of objects.
  • An unfortunate side effect of closures is that they make it trivially easy to leak memory in Internet Explorer.
  • The above code sets up the element to turn red when it is clicked. It also creates a memory leak. Why? Because the reference to el is inadvertently caught in the closure created for the anonymous inner function. This creates a circular reference between a JavaScript object (the function) and a native object (el).
  • delete el;
  • var clickHandler = function() { this.style.backgroundColor = 'red'; } (function() { var el = document.getElementById('el'); el.onclick = clickHandler; })();
  • Surprisingly, one trick for breaking circular references introduced by a closure is to add another closure:
  • It's useful to start with an idea of the language's history. JavaScript was created in 1995 by Brendan Eich, an engineer at Netscape, and first released with Netscape 2 early in 1996. It was originally going to be called LiveScript, but was renamed in an ill-fated marketing decision to try to capitalise on the popularity of Sun Microsystem's Java language — despite the two having very little in common. This has been a source of confusion ever since.
  • anonymous on 02 Feb 16
     
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  • anonymous on 05 Feb 16
     
    Chinese new year animals horoscope2016
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  • yahya_khk21121 on 12 Jul 17
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