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M*****n
发帖数: 2948 | 3 http://www.engadget.com/2011/04/18/wacom-announces-capacitive-s
replace-puny-human-fingers/
Eager to unleash some serious creativity on your tablet computer, but
stymied by the meaty nubbins you call fingers? There, there. We know your
shame. You need grace and precision: you need a stylus. Yes, the stylus,
that newly resurgent tech soon to ship with the HTC Flyer and a horde of
other Android devices. But if you're unwilling to buy a new tablet, you
might feel left out. So for you Wacom -- the c... 阅读全帖 |
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w*******y
发帖数: 60932 | 4 来自主题: _DealGroup版 - 【$】7" Android Tablet, Capacitive, Multi-touch, Dual-Core A9 CPU, HDMI, 512MB RAM, 4GB Nand, WiFi, Bluetooth, Free 5 Day DHL Int'l Screen Protector, $169.99 So, we have: 7" Multi-touch Capacitive touchscreen, Dual-Core A9 CPU,
Samsung GPU, 512MB RAM, 4GB Internal NAND Flash Memory, HDMI connection,
Built-in Bluetooth (not external), WiFi, 2MP Camera, and the REAL Google
Android Market....Plus a free screen protector and free Expedited 5 Day Int'
l DHL Shipping.....for $169.99 total - CLICK THIS LINK.:
http://www.McBub.com/tp/14?item137429ql=57fb5e98c6f0e5416516abf
From the deal page(s):
This highly portable Dual-Core 7 Capacitive Multi-touch screen ... 阅读全帖 |
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w*******y
发帖数: 60932 | 7 This deal was posted here previously, and it got exceptional reviews from
best I've seen for an Android tablet so far.
It's back at the lowest price I've seen (by about $30) for a dual core
Cortex A9 Capacitive model:
$167.99 Shipped + Free 5 Day DHL Int'l + Screen Protector
Short Attention Span Feature Summary:
Latest Generation Cortex-A9 dual core CPU
Capacitive glass multi-touch touchscreen display
Bluetooth + WiFi + Mini-USB port + MicroSD port
HDMI port (1080p) Wirelessly stream full High ... 阅读全帖 |
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w*******y
发帖数: 60932 | 8 Refurb:
Link:
http://www.walmart.com/ip/Velocity-Micro-Cruz-T301-7-Capacitive
At just under one pound, the sleek Cruz Tablet goes everywhere you do and
fits perfectly in one hand. Use the built-in Kindle bookstore app to
download and read over 700,000 eBooks in a light and convenient package.
Staying up-to-date with email and social networks is just a Wi-Fi hotspot
away, to the Cruz Tablet's 802.11n Wi-Fi and full browser support. You can
even load your Cruz Tablet's 4GB of internal storage up ... 阅读全帖 |
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w*******y
发帖数: 60932 | 9 Universal Capacitive Stylus Pen for Amazon Kindle Fire & Touch 3G, Apple
iPad 2, iPhone 4s, Droid Bionic, Accessory for All TouchScreen Devices 2
for $5.95 when you add two to your cart (discount is applied at checkout).
FSSS over $25 or FS with Prime
Sold by MiniSuit and Fulfilled by Amazon
Has great reviews.
link:
http://www.amazon.com/Universal-Capacitive-Accessory-TouchScree
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w*******y
发帖数: 60932 | 10 Ordered 3 last time when Amazon had them for $6.95 for 3 capacitive stylus.
Gave two away and want some more for backup. They work very well at
keeping my Touchpad and Acer Iconia screen very clean.
Price has dropped to $3.95 for 3 stylus with free shipping with Prime. 4.5
start with 138 reviews.
Link:
http://www.amazon.com/Capacitive-Cellphone-Motorola-BlackBerry-
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w*******y
发帖数: 60932 | 11 Specification:
- Operating System: Android 4.0 OS
- CPU: JZ4770譈urst CPU 1.0GHz
- CPU Frequency: 1.0GHz
- GPU: GC860
- RAM: 512 MB
- RAM Type: DDR2
- Internal Memory: 8GB
- Card Reader: MicroSD Card / TF Card 32GB Max.
- Screen Size: 7 inches
- Screen Resolution: 800x480 pixels
- Screen Type: Capacitive
- Video Formats: MOV, MKV, AVI, RM, TP, VOB, DAT, MPEG, MP4, PMP, 3GP, FLV,
WMV, MPG
- Audio Formats: MP3, WMA, WAV, APE, FLAC, OGG, AAC
- eBook Formats: txt, fb2, pdb, pdf, epub, mobi
- Image Fo... 阅读全帖 |
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w*******y
发帖数: 60932 | 12 3 pieces Aqua Blue/Black/Red Capacitive Stylus Pack.
Link:
http://www.amazon.com/Capacitive-Cellphone-Motorola-BlackBerry-
Ideal for touch screen tablets and phones.
Light weight design, easy to carry.
Including Clip for easy storage in your pocket, book or diary
Compatible with Apple iPad 2, iPad, iPhone, iPod Touch or other touch screen
Built in soft head for protecting your screen and increase the sensitivity
High quality.
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w*******y
发帖数: 60932 | 13 I'm not a fan of DealExtreme, but I just stumbled across a deal that is the
best I've seen so far on an outstanding tablet that I personally own.
I know that some people prefer to get it from McBub.com (where I got mine)
because they ship so fast and are one of the main reliable companies out of
China, but for the price - people may want to take a look at this:
Renesas 7" Capacitive Tablet $155.99 + Free Shipping
Details in the Wiki below.
Enjoy!
.
.
.
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w*******y
发帖数: 60932 | 14 http://www.amazon.com/dp/B0065CRXUM/ref=nosim/?tag=fatwalletcom nkCode=as1 [amazon.com]
Works on all capacitive touch screens
Conveniently designed in pen form, perfect for carrying around
The integrated and capped pen is perfect for daily use and extensive note
taking
Brand New in JKase Retail Packaging
Available in Black, Red, Magenta, Blue, Silver
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w*******y
发帖数: 60932 | 15 I don't need to say how hot Ainol Novo7 tablet is in these days, especially
the Ainol company launched the Android 4.0 version. Here we go:
Model: Ainol Novo7 Basic
CPU: Ingenic JZ4770 Xburst, 1GHz; GPU: GC860
Operation System: Android 3.2
RAM: 512MB
Nand Flash: 8GB
Screen: 7 inch Capacitive Multi-Touch(5 points touch)
Extend Card: Support TF card up to 16GB
Camera: Dual camera, front is 0.3 Megapixel and back is 2.0 Megapixel
Flash: Support Flash 10.3
Others: Android Market, Gravity S... 阅读全帖 |
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g******y
发帖数: 2517 | 16 CCM® Capacitive iPad Stylus 3-Pack / iPad 2 Stylus (Black-Red-silver)，
原价$39.95，现价$14.95
http://amzn.to/rufaom |
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w*******y
发帖数: 60932 | 17 Link:
http://www.focalprice.com/CE0031B/HYUNDAI_A7_7_Capacitive_5poin
Highlights 7" capacitive
Android 4.0 OS
Resolution: 800x480
HD capacity up to 8G
Supports 3G, USB Dongle, Wi-Fi
Supports mini HDMI interface
Supports 3D games
Supports Gravity Sensor
Supports up to 32GB TF card
General Specs
Brand HYUNDAI
Model A7
Product Type Tablet PC
Operating System Android 4.0
Processor Type Cortex-A8
Chip Quanzhi A10
Processor Clock Speed 1.5G
Cache Memory 512M
RAM/Technology ... 阅读全帖 |
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w*******y
发帖数: 60932 | 18 Amazon has this 3-pack Capacitive Stylus Touch Pens for $1.95 after instant
savings. It is compatible with most tablet devices such as the iPad, iPhone
and Xoom. Shipping is free.
LINK:
http://iway.org/9618121
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f**d
发帖数: 768 | 19 这是一本计算神经科学的优秀著作，全文拷贝这里（图和公式缺），有兴趣的同学可以
阅读
如需要，我可以分享PDF文件（－－仅供个人学习，无商业用途）
From Computer to Brain
William W. Lytton
From Computer to Brain
Foundations of Computational Neuroscience
Springer
William W. Lytton, M.D.
Associate Professor, State University of New York, Downstato, Brooklyn, NY
Visiting Associate Professor, University of Wisconsin, Madison
Visiting Associate Professor, Polytechnic University, Brooklyn, NY
Staff Neurologist., Kings County Hospital, Brooklyn, NY
In From Computer to Brain: ... 阅读全帖 |
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l*******k
发帖数: 1974 | 20 从网上下载了器件公司的Pspice model。仿真不工作。写信给他们，他们改了一下，回
了过来。说问题解决了。我试了试，还不行。
麻烦高手给看看。哪里有问题。
我用的是Pspice 9.2.3。有capture的。
从他们发过来的model file看，也是9.2.3的。
多谢，
{\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fswiss\fcharset0
Arial;}}
{\*\generator Msftedit 5.41.15.1515;}\viewkind4\uc1\pard\f0\fs20 * PSpice
Model Editor - Version 9.2.3\par
\par
* source EPC1012DEV1\par
* Revisions: \par
* 10/19/10: Changed voltage dependent capacitances to be compatable with
PSPICE.\par
* 10/19/10: Added updated RDSON param... 阅读全帖 |
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D**********s
发帖数: 3139 | 21 音量控制对音质的影响，以前有一篇note写得不错，我找了半天才找到，其实还有用变
压器的方法，不过dac这块最保真的方法就是保持位深和标准输出电平，音量控制交给
前级和功放去管就好了，终究绕不过模拟放大这一关的。
Volume Control Technologies
Newsletter Edition:
July 2009 Issue
With the introduction of Benchmark’s HDR-VC™ (High Dynamic Range
Volume Control), many audio enthusiasts are taking another look at volume
control methods. What are the differences between the different volume
control topologies? Is one sonically superior, and why?
The important qualities to consider with respect to volum... 阅读全帖 |
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N****w
发帖数: 21578 | 22 Augen 首先开始网板轰炸
定位档次全面覆盖
http://www.engadget.com/2010/10/07/augen-android-tablet-bonanza-espresso-doppio-dual-boots-ubuntu/
全都可以用同样的 dock
GENTOUCH Latte
$199 7" 800x480
GENTOUCH Latte Grande 800MHz CPU
$249 7" 800x600 multi-touch capacitive
GENTOUCH Espresso Cortex-A9 1GHz CPU
$349 7" 800x600 multi-touch capacitive, 3MP webcam
GENTOUCH Espresso Dolce Cortex-A8 1GHz CPU
$429 10" 1024x768 Multi-Touch Capacitive, 3MP webcam, HDMI
GENTOUCH Espresso Doppio
$599 10" 1024x768 Multi-Touch... 阅读全帖 |
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b********0
发帖数: 80 | 23 这不是好不好的问题，是能不能的问题。
有能drive both capacitive and resistive load的运放，但是成本高，设计复杂。如
果只是需要drive capacitive load的话，很多简单的opamp就可以了。可大部分简单的
opamp却不能drive resistive load，原因前面已经有人基本解释了。Maily gain and
output current issues.
OTA 根opamp 从严格的定义来说，是有区别的，就像前面有人指出的。但是在IC
design 领域，区别根本不严格，常常互用。opamp, amplifier, OTA may mean same
thing.
As for the stability when drive capacitive load, it really depends on the
location of dominate pole of amplifier. If it is at output, more capacitance
makes it more stable. If it is |
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N****w
发帖数: 21578 | 24 【 以下文字转载自 Hardware 讨论区 】
发信人: Notsaw (没看见 -- 系统发文延时 10 分钟), 信区: Hardware
标 题: GenTouch 山寨发威了，6 款网板，$199-$599
发信站: BBS 未名空间站 (Thu Oct 7 21:34:52 2010, 美东)
Augen 首先开始网板轰炸
定位档次全面覆盖
http://www.engadget.com/2010/10/07/augen-android-tablet-bonanza-espresso-doppio-dual-boots-ubuntu/
全都可以用同样的 dock
GENTOUCH Latte
$199 7" 800x480
GENTOUCH Latte Grande 800MHz CPU
$249 7" 800x600 multi-touch capacitive
GENTOUCH Espresso Cortex-A9 1GHz CPU
$349 7" 800x600 multi-touch capacitive, 3MP webcam
GENTOU... 阅读全帖 |
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f*****0
发帖数: 489 | 25
that much capacitance will be very difficult to drive at high speed. the
typical approach is to use a high current amplifier, and to use a serial
resistor (50 - 75ohm) to dampen the capacitance.
you may want to look into how ADSL modems solve such problems: though
the load there is more inductance than capacitance.
and they can achieve very high speed. |
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w********o
发帖数: 10088 | 26 我的意思是你要低leakage测capacitance，就弄厚点，测了以后，用厚度scale一下，
薄的capacitance就出来了
你要从device方面看，那就直接去做个fet，测rf然后做fitting就是了，怎么也能把那
film的capacitance弄出来啊 |
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h********t
发帖数: 555 | 27 Assuming the poles of the OpAmp and 1/(Cload*Rd) are located at high
frequency, then 3db bandwidth of the circuit you are showing is determined
by R and C of the node vx.
if you ignore cp, (assume cp is 0), the output resistance looking into vx is
1/((1+A)*gm). Capacitance load is C2. pole = 1/RC=(1+A)gm/C2
Note: if we ignore Cp, the equivalent load capacitance to Vx is C2 only. The
reason is simple. if you apply at test current source at vx, the current
won't go to C1, because it is assumed ... 阅读全帖 |
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j*******n
发帖数: 2205 | 28 Dell V7140PRO-4655BLK - Venue 11 Pro 10.8" - Intel Core M - 64GB - with
Keyboard - Black
Boost your on-the-go productivity with this Dell Venue 11 Pro tablet, which
features Wi-Fi for easy Web access and a 64GB capacity that provides space
for important files. The 10.8" capacitive touch screen simplifies use and
offers crisp images.
Windows 8.1 64-bit
10.8" high-definition 10-point capacitive touch screen with 1920 x 1080
resolution
64GB storage capacity
Dual-core processor Intel® Core®... 阅读全帖 |
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m*r
发帖数: 37612 | 29 HP SmartBuy TouchPad Wi-Fi 64GB
HP SmartBuy TouchPad Wi-Fi 64GB
64GB internal storage, Qualcomm Snapdragon dual-CPU APQ8060 processor (1.5 G
Hz), HP webOS 3.0, 9.7" XGA capacitive multitouch screen w/18-bit color (102
4 x 768), Qualcomm Adreno core Graphics, charger/micro USB connector, 3.5mm
stereo jack, Beats Audio internal speakers, Virtual keyboard, Wi-Fi 802.11b/
g/n with (WPA/WPA2/WEP), 802.1X authentication Bluetooth wireless technology
2.1 + EDR w/A2DP stereo Bluetooth support, Rechargea... 阅读全帖 |
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j*******n
发帖数: 2205 | 30 Dell V7140PRO-4655BLK - Venue 11 Pro 10.8" - Intel Core M - 64GB - with
Keyboard - Black
Boost your on-the-go productivity with this Dell Venue 11 Pro tablet, which
features Wi-Fi for easy Web access and a 64GB capacity that provides space
for important files. The 10.8" capacitive touch screen simplifies use and
offers crisp images.
Windows 8.1 64-bit
10.8" high-definition 10-point capacitive touch screen with 1920 x 1080
resolution
64GB storage capacity
Dual-core processor Intel® Core®... 阅读全帖 |
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j*******n
发帖数: 2205 | 31 Dell V7140PRO-4655BLK - Venue 11 Pro 10.8" - Intel Core M - 64GB - with
Keyboard - Black
Boost your on-the-go productivity with this Dell Venue 11 Pro tablet, which
features Wi-Fi for easy Web access and a 64GB capacity that provides space
for important files. The 10.8" capacitive touch screen simplifies use and
offers crisp images.
Windows 8.1 64-bit
10.8" high-definition 10-point capacitive touch screen with 1920 x 1080
resolution
64GB storage capacity
Dual-core processor Intel® Core®... 阅读全帖 |
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a*****u
发帖数: 893 | 32 Post-doctor in Electrical Tomography based Subsea Gas-oil-water
Multiphase Flow Metering
Graduate School at Shenzhen, Tsinghua University, China
Division of Ocean Science and Technology in Tsinghua University now is
looking for 1-2 two years post-doctor in research on Electrical tomography
based subsea gas﹐-oil-water multiphase flow metering. The working location
will be in Shenzhen campus but frequently travel to Beijing.
http://www.sz.tsinghua.edu.cn/
The major research includes: electrical ... 阅读全帖 |
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l**********s
发帖数: 4363 | 33
你说的这个是因为capacitive的touchscreen必须用手或者其他electrical conductor
来改变屏幕表面的电场分布，而手套是完全绝缘的。用硬棒棒的那个是resistive
touchscreen，必须用硬物让里面的两层金属触碰。
我不知道touchpad的屏幕是哪种的，没用过，但ipad是capacitive的，所以更贵 |
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t****g
发帖数: 35582 | 34 lenovo那个我去MC摸了一下，太塑料了。
后来在ebay蹲守，一样的钱买了个二手elitebook 2730p。
现在的新本都是capacitive multi-touch加wacom digitizer二合一的。而且支持palm
rejection。只要笔接近屏幕一定的距离，capacitive multi touch就自动关闭。
elitebook2740p和x201t都是这样的。前者因为人气没有tp那么高，实惠很多，$1000就
可以在ebay上买个brand new的。 |
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x5
发帖数: 27871 | 35 像素大，full well capacitance就大
full well capacitance/noise决定信噪比， |
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r**********0
发帖数: 3236 | 36 Apple Now Has a Patent on Their Capacitive Multitouch Displays...
这个技术早就有了，而且估计不少公司都patent过，Apple这样搞有啥意义？今后别的
公司都不能出
capacitive触摸屏了？奇怪。。。 |
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i****e
发帖数: 1527 | 37 我在Apple网站上搜到这个问题，如下。
Symptoms
Learn what to do if the cursor jumps or moves without the trackpad being
touched. The cursor may also act strangely when the trackpad is touched.
Resolution
The Apple Magic Trackpad and built-in trackpads on Apple portable computers
work on a principle called coupling capacitance. As your finger moves over
the surface, the trackpad evaluates the change in capacitance between two
layers of measurement electrodes built into the surface of the trackpad and
translates t... 阅读全帖 |
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a*******i
发帖数: 11664 | 38 https://www.evernote.com/market/feature/stylus?sku=STYL001001
有点贵,$79，不过如果有x230t那种体验也值了
看了一下，1.9mm的stylus
The Technology
Touch screens emit a capacitance signature. Each of the iOS devices has a
slightly different capacitance signature coming from their touch screen.
When Pixelpoint detects the unique signature of a particular screen, it
inverts the signature and sends it back. Just hit the power button and start
making. |
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