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Cellphone care and feeding

Cellphones are frequently used as gateways for communication with computers via SMS messages. For that purpose they tend to be tethered to the host computer by a serial cable (usually FBUS) and controlled by a suitable host software, eg. Gnokii. They are also powered from a mains adapter.

However, when transmitting, the phones demand a huge pulse current (sometimes 2 amps and more), even if its average current consumption stays in low hunderds milliamps at worst. The wall wart adapter is inexpensive and anemic, therefore even with mains feed, the phone stays woefully dependent on its internal battery (usually NiMH or Li-ion) to serve the energy when the mains feed is not enough.


Late in its life cycle, the battery becomes old, its capacity drops, and its internal resistance soars. The result is growing voltage drop during the pulse load. If the battery voltage falls below a threshold, the phone switches itself off. The symptom is a phone dying during handling a phonecall, and later even during sending/receiving a message.Read more..

Your rating: None Average: 3.6 (17 votes)

In this article we will try to give you a taste of web operating systems. What you can do with them and where to find them.

Some of the OS mentioned, require that you register an account, while others require that you have a beta invitation.Read more..

Your rating: None Average: 4 (5 votes)

This is  a simple article to setup a DNS Server in Ubuntu. Please follow the steps to make this.  Setting up DNS Server is used to serve the new domain names using your IP. This is kind of providing webhosting.

Step1: We need to install bind 9 for this

Read more..

Your rating: None Average: 3.3 (4 votes)

This application will generate network unlock codes for your mobile phone which you simply enter into the phone keypad to unlock your phone to all networks

remove your sim card and switch on the phone

type *#06# to get phone serial number and enter this into the program along with your phone model number and current network

click on calculate button and you will receive a list of unlock codes
(i usually find that either the first or last code works fine)

enter the code into your phone (use the * key for the pw+ characters)

your phone will say something like 'sim restrictions lifted' and then reboot itself

thats it you can now use any simcard in your phone

Your rating: None Average: 4.3 (23 votes)

* Download any book from Google Books marked as 'Full view'
* Partially download any book from Google Books marked as 'Limited preview'
* Access to any book available only for US citizens
* Searching for hidden pages (not indexed by Google Books)

Your rating: None Average: 3.9 (11 votes)

Medusa is intended to be a speedy, massively parallel, modular, login brute-forcer. The goal is to support as many services which allow remote authentication as possible. The author considers following items as some of the key features of this application:
  • Thread-based parallel testing. Brute-force testing can be performed against multiple hosts, users or passwords concurrently.
  • Flexible user input. Target information (host/user/password) can be specified in a variety of ways. For example, each item can be either a single entry or a file containing multiple entries. Additionally, a combination file format allows the user to refine their target listing.
  • Modular design. Each service module exists as an independent .mod file.Read more..
    Your rating: None Average: 3.6 (20 votes)



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