Minggu, 19 Oktober 2014
Optical - Mouse - 3 x Buttons - Type A - USB
Sabtu, 18 Oktober 2014
Logitech V220 Cordless Optical Mouse for Notebooks Blue Flourish
Are you bold? Playful? Flirty? Or a little of each? It¿s plug-and-play meets playful when our most popular wireless mouse gets an expressive splash. Whether you love it for the soft grips, compact size, or touch of style for everything you do with your notebook computer¿you can find your favorite in a collection designed for you with fun colors and limited edition prints. Treat yourself to color, comfort, and convenience that can go everywhere your laptop does. And express yourself with a LogiPrice: $24.99
Jumat, 17 Oktober 2014
Bootloading Atmega1284P Part 1
Finally able to flash the Arduino bootloader it to fresh Atmega1284P via my version of ISP programmer. ISP programmer includes and Atmega328P and FTDI board for serial communication between PC and the Atmega328P. Armega328 is loaded with ArduinoISP sketch.
This works with Arduino 1.0.1(old version that i use for test) IDE and still testing for Arduino 1.5(i have upgraded to). Once the following files installed to the Arduino Hardware folder (https://github.com/maniacbug/mighty-1284p/zipball/master) please mind to restart the application. After restart you will see from the hardware list as Original Mighty 1284p 16 and 8MHz.
Select the hardware, port and the programmer as Arduino ISP and burn the bootloader. This process takes quite sometime and after its loaded, do a test by loading blink sketch. Use upload using programmer button to upload the sketch.
Blink sketch on test.. cool it works for me.
I am trying to workout this method in version 1.5 too, as soon as it works i will post it. :) enjoy programming Atmega1284P.
Kamis, 16 Oktober 2014
Network Types
Introduction to Network Types
LAN, WAN and Other Area Networks
One way to categorize the different types of computer network designs is by their scope or scale. For historical reasons, the networking industry refers to nearly every type of design as some kind of area network. Common examples of area network types are:
• LAN - Local Area Network
• WLAN - Wireless Local Area Network
• WAN - Wide Area Network
• MAN - Metropolitan Area Network
• SAN - Storage Area Network, System Area Network, Server Area Network, or sometimes Small Area Network
• CAN - Campus Area Network, Controller Area Network, or sometimes Cluster Area Network
• PAN - Personal Area Network
• DAN - Desk Area Network
LAN and WAN were the original categories of area networks, while the others have gradually emerged over many years of technology evolution.
Note that these network types are a separate concept from network topologies such as bus, ring and star.
LAN - Local Area Network
A LAN connects network devices over a relatively short distance. A networked office building, school, or home usually contains a single LAN, though sometimes one building will contain a few small LANs (perhaps one per room), and occasionally a LAN will span a group of nearby buildings. In TCP/IP networking, a LAN is often but not always implemented as a single IP subnet.
In addition to operating in a limited space, LANs are also typically owned, controlled, and managed by a single person or organization. They also tend to use certain connectivity technologies, primarily Ethernet and Token Ring.
WAN - Wide Area Network
As the term implies, a WAN spans a large physical distance. The Internet is the largest WAN, spanning the Earth.
A WAN is a geographically-dispersed collection of LANs. A network device called a router connects LANs to a WAN. In IP networking, the router maintains both a LAN address and a WAN address.
A WAN differs from a LAN in several important ways. Most WANs (like the Internet) are not owned by any one organization but rather exist under collective or distributed ownership and management. WANs tend to use technology like ATM, Frame Relay and X.25 for connectivity over the longer distances.
LAN, WAN and Home Networking
Residences typically employ one LAN and connect to the Internet WAN via an Internet Service Provider (ISP) using a broadband modem. The ISP provides a WAN IP address to the modem, and all of the computers on the home network use LAN (so-called private) IP addresses. All computers on the home LAN can communicate directly with each other but must go through a central gateway, typically a broadband router, to reach the ISP.
Other Types of Area Networks
While LAN and WAN are by far the most popular network types mentioned, you may also commonly see references to these others:
• Wireless Local Area Network - a LAN based on WiFi wireless network technology
• Metropolitan Area Network - a network spanning a physical area larger than a LAN but smaller than a WAN, such as a city. A MAN is typically owned an operated by a single entity such as a government body or large corporation.
• Campus Area Network - a network spanning multiple LANs but smaller than a MAN, such as on a university or local business campus.
• Storage Area Network - connects servers to data storage devices through a technology like Fibre Channel.
• System Area Network - links high-performance computers with high-speed connections in a cluster configuration. Also known as Cluster Area Network.
Read More..
LAN, WAN and Other Area Networks
One way to categorize the different types of computer network designs is by their scope or scale. For historical reasons, the networking industry refers to nearly every type of design as some kind of area network. Common examples of area network types are:
• LAN - Local Area Network
• WLAN - Wireless Local Area Network
• WAN - Wide Area Network
• MAN - Metropolitan Area Network
• SAN - Storage Area Network, System Area Network, Server Area Network, or sometimes Small Area Network
• CAN - Campus Area Network, Controller Area Network, or sometimes Cluster Area Network
• PAN - Personal Area Network
• DAN - Desk Area Network
LAN and WAN were the original categories of area networks, while the others have gradually emerged over many years of technology evolution.
Note that these network types are a separate concept from network topologies such as bus, ring and star.
LAN - Local Area Network
A LAN connects network devices over a relatively short distance. A networked office building, school, or home usually contains a single LAN, though sometimes one building will contain a few small LANs (perhaps one per room), and occasionally a LAN will span a group of nearby buildings. In TCP/IP networking, a LAN is often but not always implemented as a single IP subnet.
In addition to operating in a limited space, LANs are also typically owned, controlled, and managed by a single person or organization. They also tend to use certain connectivity technologies, primarily Ethernet and Token Ring.
WAN - Wide Area Network
As the term implies, a WAN spans a large physical distance. The Internet is the largest WAN, spanning the Earth.
A WAN is a geographically-dispersed collection of LANs. A network device called a router connects LANs to a WAN. In IP networking, the router maintains both a LAN address and a WAN address.
A WAN differs from a LAN in several important ways. Most WANs (like the Internet) are not owned by any one organization but rather exist under collective or distributed ownership and management. WANs tend to use technology like ATM, Frame Relay and X.25 for connectivity over the longer distances.
LAN, WAN and Home Networking
Residences typically employ one LAN and connect to the Internet WAN via an Internet Service Provider (ISP) using a broadband modem. The ISP provides a WAN IP address to the modem, and all of the computers on the home network use LAN (so-called private) IP addresses. All computers on the home LAN can communicate directly with each other but must go through a central gateway, typically a broadband router, to reach the ISP.
Other Types of Area Networks
While LAN and WAN are by far the most popular network types mentioned, you may also commonly see references to these others:
• Wireless Local Area Network - a LAN based on WiFi wireless network technology
• Metropolitan Area Network - a network spanning a physical area larger than a LAN but smaller than a WAN, such as a city. A MAN is typically owned an operated by a single entity such as a government body or large corporation.
• Campus Area Network - a network spanning multiple LANs but smaller than a MAN, such as on a university or local business campus.
• Storage Area Network - connects servers to data storage devices through a technology like Fibre Channel.
• System Area Network - links high-performance computers with high-speed connections in a cluster configuration. Also known as Cluster Area Network.
Rabu, 15 Oktober 2014
Selasa, 14 Oktober 2014
How to Download Without Installing Malware
Hell no! Downloading might not be as simple as it once was, but its far from an impossible mission, convoluted download portals be damned. Well show you how to wade through the sea of shady links and track down the program youre looking, but it doesnt end there. You also have to be careful when installing an application, as installers sometimes carry adware, especially ones for free programs.
To Click or Not to Click the Big Green Download Button?
Lets walk through the process of downloading "The Matrix" screensaver.
The link we provided jettisons readers to where the screensaver is hosted on CNETs website. Heres what you should see when you navigate there:
CNETs download.com is a popular website so you might not think twice about clicking the Download Now button, but take a closer look.
 |
| The fine print indirectly admits to installing adware. |
If you hover your mouse over the button, youll discover CNET is using an ad-supported wrapper. Not all downloads on CNETs website use the ad-supported stub installer, but the ones that do are indentified as such (so long as youre paying attention), both on the green Download button ("CNET Installer Enabled") and via the above pop-up box.
 |
| Downloading and installing looks so simple and easy but its often anything but. |
If you choose to proceed, youll be presented with several attempts like the one shown above to install third-party software in addition to The Matrix screensaver. Simply click the Decline button to skip these offers one-by-one rather than mashing the oh-so-inviting Accept button. If you learned anything at all from mythology, its that you should avoid being tempted by Sirens, and download sites serve up plenty of them.
 |
| Do you really want to install random third party apps? |
Some screens are a little trickier than others and offer only two options:
- Full Installation (Recommended)
- Custom Installation (Advanced User)
When you encounter one of these screens, check the Custom Installation radio button and then deselect any checkboxes asking if you want to install toolbars or other cruft.
 |
| The legitimate download button is often the hardest one to find. |
If this seems like an unnecessarily long path to the end, thats because it is. Instead of jumping through CNETs third-party hoops, an easier way to grab The Matrix (and similar downloads) is to click on the direct download situated just below the download button. Easy cheesy, right?
 |
| This particular link has SEVEN download buttons. Which one is the legitimate one? |
Lest anyone think were picking on CNET, its actually not that bad compared to plenty of other download sites that make things much harder than they need to be. Its certainly not uncommon to see adware/malware masquerading as legitimate download links. Some are worse than others. In the screenshot above, there are no less than seven links with the words "download" or "driver," but only one of them actually links to the file were looking for. How can you tell? Once again, hover your mouse over each button/link and see where it points to. If its a DoubleClick ad or anything similar, then move on to the next one. In this case, the second download button with a right-facing arrow directs us to a URL with the words "ARCHOS-101-XS-Tablet-Firmware-412-Download" contained within. Thats the one were looking for.
Scan for Malware
Once youve finally found and downloaded the file youre looking for, be sure to scan it for malware, especially if you grabbed it from a site youve never heard of. Use any on-demand scanners you have installed (such as a daily AV program and/or Malewarebytes), and also upload the file to VirusTotal, a free cloud-based service that analyzes suspicious files and URLs for dirty code.
 |
| Using Virustotal is extremely easy, especially with a browser extension |
If youre a Firefox user, we highly recommend installing VTzilla, an official VirusTotal browser extension. The extension adds a toolbar to Firefox, which you can disable if you prefer, as well as a right-click context menu entry to scan hyperlinks with VirusTotal before visiting the site in question.
Senin, 13 Oktober 2014
An Engineers Guide to Silicon Valley Startups 3rd Edition
My first book, An Engineers Guide to Silicon Valley Startups continues to sell very well, considering that theres essentially no marketing budget for it and its spreading only by word of mouth. I recently ran out of the 2nd edition printing, and coincidentally, there were a few updates that needed to go in for the 3rd edition.
Over the last 2 years, its clear that the market for books that are mostly text has shifted dramatically. When I first started selling books, printed copies accounted for 70% of sales while digital copies were the other 30%. Now its the other way around and the tide continues to shift in favor of ebooks. As such, the costs of storing, shipping, and postage of printed books is no longer worth the amount of additional revenue I get.
Fortunately, Amazon is happy to print and ship books on an on-demand basis, so thats what I will do for printed books. This unfortunately means increased prices: Amazon wants their pound of flesh, so printed copies now cost $43.95 a pop, as opposed to $29.95. On the other hand, if the book is popular, Amazon could discount it, and of course, Amazon provides free shipping. For a limited time, you can pre-order the 3rd edition at the old price ($29.95 + shipping) from the books web-page. I need to order copies for the freebies as well as for the library of congress, so you would be pigging back on this process. (I also need to look over the final proof one more time)
The new edition features new sections on green cards, surviving a big acquisition, negotiating between co-founders, as well as an expanded financial planning section that was asked for by readers. In addition, my friend Scarlet Tang has re-designed the cover. One big disappointment was that I had moved the book over to InDesign CS 5.5 in the hopes of producing an EPUB and Kindle-compatible editions. Unfortunately, InDesign CS 5.5 crashes whenever it attempts to export an EPUB, so Im stuck with still only shipping PDFs. You can still use Mobipocket creator to create a Kindle edition from the PDF, but the results were not satisfactory to me, so Ill let those who want to do this bear the consequences for it.
As with the 2nd edition, everyone whos bought a copy within the last month (i.e., from April 8th) gets a free digital copy of the book. For everyone else, upgrade pricing is available. Note that you can only upgrade from a 2nd edition to the 3rd edition. No skipping from the 1st edition to the 3rd edition for $12.50. Note that Kindle edition owners do not get upgrades, nor will the Kindle version get updated to the 2nd edition. Its $9.95, which is already a hefty discount. As Ive previously mentioned, if youre actively job-hunting, the full version is what you want. If youre poor or in school, then by all means buy the Kindle edition.
As for my other books, expect them to go in the same direction as the print copies run out. I aim to be done with shipping and handling by the end of the year if not sooner.
Read More..
Over the last 2 years, its clear that the market for books that are mostly text has shifted dramatically. When I first started selling books, printed copies accounted for 70% of sales while digital copies were the other 30%. Now its the other way around and the tide continues to shift in favor of ebooks. As such, the costs of storing, shipping, and postage of printed books is no longer worth the amount of additional revenue I get.
Fortunately, Amazon is happy to print and ship books on an on-demand basis, so thats what I will do for printed books. This unfortunately means increased prices: Amazon wants their pound of flesh, so printed copies now cost $43.95 a pop, as opposed to $29.95. On the other hand, if the book is popular, Amazon could discount it, and of course, Amazon provides free shipping. For a limited time, you can pre-order the 3rd edition at the old price ($29.95 + shipping) from the books web-page. I need to order copies for the freebies as well as for the library of congress, so you would be pigging back on this process. (I also need to look over the final proof one more time)
The new edition features new sections on green cards, surviving a big acquisition, negotiating between co-founders, as well as an expanded financial planning section that was asked for by readers. In addition, my friend Scarlet Tang has re-designed the cover. One big disappointment was that I had moved the book over to InDesign CS 5.5 in the hopes of producing an EPUB and Kindle-compatible editions. Unfortunately, InDesign CS 5.5 crashes whenever it attempts to export an EPUB, so Im stuck with still only shipping PDFs. You can still use Mobipocket creator to create a Kindle edition from the PDF, but the results were not satisfactory to me, so Ill let those who want to do this bear the consequences for it.
As with the 2nd edition, everyone whos bought a copy within the last month (i.e., from April 8th) gets a free digital copy of the book. For everyone else, upgrade pricing is available. Note that you can only upgrade from a 2nd edition to the 3rd edition. No skipping from the 1st edition to the 3rd edition for $12.50. Note that Kindle edition owners do not get upgrades, nor will the Kindle version get updated to the 2nd edition. Its $9.95, which is already a hefty discount. As Ive previously mentioned, if youre actively job-hunting, the full version is what you want. If youre poor or in school, then by all means buy the Kindle edition.
As for my other books, expect them to go in the same direction as the print copies run out. I aim to be done with shipping and handling by the end of the year if not sooner.
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