Gate-Array-Backfill (GBF) Cells

Nearly every chip being produced today faces at least one respin in the life of the project. Multiple respins are not uncommon. The financial pain of these engineering potholes can be alleviated by changing as few layers in the design as possible–two layers changed in a 10 layer design is a great savings over an all-layer respin.

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汽车:老司机总结出的21条开车经验

1:堵车或等灯的时候别跟的太近,除非有人想加塞,至少要留出可以一把掰出去的距离,以防前车故障,自己也被加在中间。这是一个老司机告诉我的,当年他在3环就这样陪着前车呆了半个小时。

2:排队时,为了防止别人加塞,在加塞来车一侧,多留半个车身。比如你在左转道排队,经常有人从直行道过来加塞,你尽量用右轮压着左转道的右边线开,给自己向左迂回留出余地,再跟紧前车,加塞的很难得逞。

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Clock Net Shielding In IC Compiler (ICC)

Overview of Clock Net Shielding Methodologies

There are 2 clock net shielding flow, the difference is clock net shielding is either before signal routing or post. You can use the following two shielding methodologies:

  1. Shield before signal route: routing clocks + shielding clock nets + routing signal nets
  2. Shield after signal route: routing clocks + routing signal nets + shielding clock nets

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锁相环PLL(Phase Locked Loop)

什么是锁相环PLL(Phase Locked Loop):

锁相环PLL是指一种电路或者模块,它用于在通信的接收机中,其作用是对接收到的信号进行处理,并从其中提取某个时钟的相位信息。或者说,对于接收到的信号,仿制一个时钟信号,使得这两个信号从某种角度来看是同步的(或者说,相干的)。

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Drupal主题:标签(Taxonomy Term)按类别显示

在Wordpress中,标签会按照类别显示。不过Wordpress就两种标签:文章分类和标签。在Drupal中,你可以创建不同类型的标签,如:文章分类,文章地点,涉及人物,天气等等类型(Vocabulary)。但是默认时会将这些标签(Taxonomy Terms)显示在一起,我们可以用下面的代码将这些标签按类别分开显示:

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Drupal主题:为摘要(teaser)页面制作专门的主题模板

有下面的三种方法可以为摘要页面制作单独的主题:

方法一: < ?php if ($teaser) { // node is being displayed as a teaser // Anything here will show up when the teaser of the post is viewed in your taxonomies or front page } else { //all other cases //Anything here will show up when viewing your post at any other time, e.g. previews } ?>

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