Certificate of no criminal record - 未名空间MITBBS历史存档

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Certificate of no criminal record

Certificate of no criminal record# Immigration - 落地生根

r*t2010-06-14 07:06

1 楼

下午刚刚面的，职位是hardware engineer。发现版上的面经都没有这方面的，就发出来给大家
分享一下。
寒暄之后就让我介绍了一下自己的一个项目，我做的是sensor network，就主要介绍了一下这个
项目的功能，有什么特点，我主要负责了哪些内容。 balabala说了一通。期间问了一些相关的内
容，基本上没有什么刁难的地方。
第二个问到了I2C总线，让我讲的越详细越好。我就把自己做I2C所知道的都说出来了，包括时序之
类的。因为一般上是用MCU和芯片的I2C相连接，所以我说到对I2C编程实际上是对MCU的寄存器操
作。后来又问，如果MCU上没有I2C模块，怎么实现和有I2C接口的芯片相连接，还考虑到哪些问题,
对MCU有什么要求。我就按自己的理解说了一通，用GPIO实现，用函数把底层的封装起来，这样方
便自己调用。
第三个问题是，若果有一个application，你会如何选择你的平台，是用MCU还是DSP还是ARM最后
一个问题是，给你一个具体的问题，让你选择适当的方式直线。要求是把一个VGA信号转换成数字信
号显示在LCD上，这个问题我听了两遍还是没有听清楚他到底要干什么（听力太差了。。。），就胡
乱说了一下，用MCU+FPGA的方式。然后他又问能不能detail一点的。比如说要不要buffer什么
的。我先想着VGA是模拟的，不要buffer。后来我想着还是要个buffer比较好，处理这一屏的时
候要缓冲下一屏的信号。就胡乱说了两句，这个时候我已经乱了方寸，估计没有什么说清楚（悲剧的
口语）。
最后我问了两个问题问他。都是无关痛痒的。。。
整个过程35分钟，气氛还算友好。希望对大家有用，特别是面试非software engineer的同学。

p*o2010-06-14 07:06

2 楼

自己DIY NIW 的申请，这个 Certificate of no criminal record 是什么文件？需要
怎么准备? 非常感谢

B*12010-06-14 07:06

3 楼

I like such kind of interview. Apple style...
How did you submit the resume and get the interview?

m*g2010-06-14 07:06

4 楼

Not needed.

r*t2010-06-14 07:06

5 楼

someone submitted my resume internally.

【在 B*******1 的大作中提到】

: I like such kind of interview. Apple style...
: How did you submit the resume and get the interview?

l*u2010-06-14 07:06

6 楼

good

a*c2010-06-14 07:06

7 楼

thanks alot; bless!
seems like they want people who really understand hardware interface
standards and know how to implement them if the situation calls for it
(
reasonable given that the position is for someone with 5+ years of
experience if I am not mistaken)
I'm MSEE myself and have a research background very similar to LZ's
(MANET)
but my hands-on experience is rather limited, thanks to all those SoCs
with a variety of daughter-card options which come with pretty much
everything you'll ever need if you pick the right
part in the beginning, heck, I haven't even played with an FPGA, ever.
For Q2, I think I'd answer almost exactly the same way as LZ.
Q3 is just a pretty straightforward requirement evaluation problem:
application requirement (computing power, special hardware, etc),
cost,
power consumption, space limitation, blah blah blah.
as for Q4, I think I need to study up on the specifications.
question for LZ: do you think they really expect you to know all these
interface standards or were they just trying to gauge your thought
process
when you don't know what the right answer is?

r*t2010-06-14 07:06

8 楼

我觉得你回答的比我好多了，而且英语也比我好。
我个人觉得google不是想考察你真的了解具体的spec。因为spec那么多，I2C可能只是面试官平时用到的一个，而对于我来说真是的像随意抽查的一个。事前不好准备。我只是可能在1个月前调试过I2C，可能还残留了一点印象。算是比较lucky。
他真是考察的还是你对协议的理解，像I2C SPI RS232都是大同小异的，看看你在面对一个从来没有见过的协议，有没有sense。

【在 a***c 的大作中提到】

: thanks alot; bless!
: seems like they want people who really understand hardware interface
: standards and know how to implement them if the situation calls for it
: (
: reasonable given that the position is for someone with 5+ years of
: experience if I am not mistaken)
: I'm MSEE myself and have a research background very similar to LZ's
: (MANET)
: but my hands-on experience is rather limited, thanks to all those SoCs
: with a variety of daughter-card options which come with pretty much