Difference Between Analog and Digital?

Author: Subhash


Analog and Digital

As a technology, analog is the process of taking an audio or video signal (the human voice) and translating it into electronic pulses. Digital on the other hand is breaking the signal into a binary format where the audio or video data is represented by a series of '1's and '0's. Simple enough when it\'s the deviceanalog or digital phone, fax, modem, or likewisethat does all the converting for you.

Digital versus analog can refer to method of input, data storage and transfer, the internal working of an instrument, and the kind of display. The word comes from the same source as the word digit and digitus.

The digital technology breaks your voice (or television) signal into binary code a series of 1s and 0s transfers it to the other end where another device (phone, modem or TV) takes all the numbers and reassembles them into the original signal. The beauty of digital is that it knows what it should be when it reaches the end of the transmission. That way, it can correct any errors that may have occurred in the data transfer. What does all that mean to you? Clarity. In most cases, you\'ll get distortion-free conversations and clearer TV pictures. The nature of digital technology allows it to cram lots of those 1s and 0s together into the same space an analog signal uses. Like your button-rich phone at work or your 200-plus digital cable service, that means more features can be crammed into the digital signal. Digital offers better clarity, but analog gives you richer quality. Digital like the VCR or the CD is coming down in cost and coming out in everything from cell phones to satellite dishes.

Phone lines

Digital lines are found in large, corporate phone systems. Though digital lines carry lower voltages than analog lines, they still pose a threat to your analog equipment.

Analog lines also referred to as POTS (Plain Old Telephone Service), support standard phones, fax machines, and modems. These are the lines typically found in your home or small office

There are digital-to-analog adapters that not only let you use analog equipment in a digital environment, but also safeguard against frying the internal circuitry of your phone, fax, modem, or laptop.

Cordless phone

The very nature of digital technologybreaking a signal into binary code and recreating it on the receiving endgives you clear, distortion-free cordless calls.

Cordless phones with digital technology are also able to encrypt all those 1s and 0s during transmission so your conversation is safe from eavesdroppers. Plus, more power can be applied to digital signals and thus, you\'ll enjoy longer range on your cordless phone conversations.

The advantage to analog cordless products? Well, they\'re a bit cheaper. And the sound quality is richer. So unless you need digital security, why not save a few bucks and go with an analog phone? After all, in home or small office environments where you may be the only cordless user, you won\'t have any interference issues.

Keep in mind, when talking about digital and analog cordless phones, you\'re talking about the signals being transferred between the handset and its base. The phones themselves are still analog devices that can only be used on analog lines. Also, the range of your cordless phoneanalog or digitalwill always depend on the environment.

Cellular Phones

Perhaps the most effective use of the digital versus analog technology is in the booming cellular market. With new phone activations increasing exponentially, the limits of analog are quickly being realized.

Digital cellular lets significantly more people use their phones within a single coverage area. More data can be sent and received simultaneously by each phone user. Plus, transmissions are more resistant to static and signal fading. And with the all-in-one phones out nowphone, pager, voice mail, internet accessdigital phones offer more features than their analog predecessors.

Analog\'s sound quality is still superioras some users with dual-transmission phones will manually switch to analog for better sound when they\'re not concerned with a crowded coverage areabut digital is quickly becoming the norm in the cellular market.

Better Sound Quality

Digital offers a better quality of sound. Proponents of digital claimed too that because digital scrambled up the signals into bursts, it was more secure than analog and can help thwart 'cloning,' an act of grabbing phone account information over the air in order to copy then resell that information for piracy purposes. By some industry estimates, close to $650 million in wireless services has been coveted by these big-eared crooks, which only adds onto the operator\'s bottom line a cost that is eventually passed on to the customer. Digital has stronger battery life than analog, and for the most part, better, more modern features on the phones.
Article Source: http://www.articlesbase.com/communication-articles/difference-between-analog-and-digital-69824.html


About the Author
For more information on Analog and Digital visit at http://www.halfvalue.com and http://www.halfvalue.co.uk websites.

How To Make An iPhone App

Author: Sarah Helen Nagath

As you know, the iPhone is the most popular smartphone. With the rapid pace of iPhone sales every day, nothing can stop the incredible iPhone. The good thing of the iPhone is that Apple is always on top of things, such as the release of the iPhone 4. One of the best iPhone features is the Apple Store application. The App Store allows mobile applications by third party companies and individuals such as games, services, content, etc. All you can imagine is to be created into an application for the iPhone. Today I will show you how easy this is!

There are various methods to create an application for the iPhone. How awesome would it be to click a few buttons, which actually creates the program for you. All you have to do is be creative and make the best iPhone application that can be!

If you have no programming experience, it would seem unlikely that you cannot have a future in iPhone Apps. The following example shows you you\'re dead wrong!

If you did not hear of an application called 'iFart'. It grossed more than $27,000 on the first day it was launched. All that the applications did was give you some options to make sounds. You can develop AND publish similar apps in less than 2 hours!

Why not make more useful and needed apps for people to use every day? Do you have a great idea? Take charge today and use a tool I\'ve used to create my personal iPhone App and publish it to the world!

Do you want to know how to build an application for the iPhone? Check out: Easy iPhone App Builder
Article Source: http://www.articlesbase.com/technology-articles/how-to-make-an-iphone-app-3578214.html


About the Author
Do you want to know how to build an application for the iPhone? Check out: Easy iPhone App Builder

DVR 4000 H.264 CCTV card setup files

Here are the setup files for DVR 4000. The software supports up to 16 cameras. MP4/H.264 recording.

Download the DVR4000 and client player manuals drivers from the links below-


New Version 4.01 - DVR4000-DVRS-FlashBlack-ENG-v4.01.rar

DVR 4000 old Version - http://www.mediafire.com/?mynmztwazwd

DVR4000

DVR4000 server settings

DVR4000 Server

I recommend upgrading to a newer and cheaper card like 16CH D1 Record H.264 DVR Card if you are having problems with the dvr4000 pci card.

--> Here are some setup instruction files that I found with the dvr package.

User manual download links -

dvr 4000 PCI CCTV card Digital Hard Disk Video System - User's Manual for IE Browsing

dvr 4000 PCI CCTV card Digital Hard Disk Video System - User's Manual for Client Side.doc
dvr 4000 PCI CCTV card Digital Hard Disk Video System - User's Manual for Player.doc
dvr 4000 PCI CCTV card Digital Hard Disk Video System - User's Manual for Server (server)

Siemens sx763 ADSL router unlock decrypt config file and recover/reveal lost password

Here's the RAR archive of the utility that decrypts " active_configfile " configuration file. after it's decrypted  it can be opened with a text editor to display the username and password. useful to recover a password of VoIP, ADSL internet password. dev by Iskona ... It is necessary to put "active_configfile" file from Save & Restore, in the folder you unzipped the archive. run the .bat file to decrypt.


http://sx7630.tk/sx76x_config_decrypt.zip

all the credit goes to the amazing author of this software. 




and more info -

http://bcsaba.net/?q=hu/comment/reply/3

http://sx763.co.cc/

so if you want to recover or reveal a lost password of an ADSL login or VOIP login this is it. siemens Sx763 is a great router and offer a full set of features.

here's the user manual just in case if someone is looking for it.

sx763 siemens user manual pdf

Top Gear series 17 episode 2 ( S17E02 ) full video

-James drives the new Aston Martin Virage and the Stig takes it around the test track.
-Jeremy, James, and Richard go on a road trip challenge through Italy to Monaco driving three hot hatches — the Citroën DS3 Racing, Renault Clio Renault Sport Cup, and Fiat 500 Abarth SS.
-SIARPC: comedian Ross Noble.





top-gear-17x02-20110703 click on the segments 1-7 on the  right side of the video to watch the full 60 minutes show



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Transformers: Dark of the Moon (2011)

wow amazing movie. read all about it at imdb.

Transformers: Dark of the Moon (2011)

Top Gear series 17 episode 1 ( S17E01 ) full video

Here you have the link to the video. I liked this video of TG so much. its a shame that bbc doesnt allow anyone outside UK to view these TG videos on their website. Even for British people outside UK. FAIL.

60 minutes full video.



here's what's happenning on this episode.

• Jeremy Clarkson celebrates the 50th birthday of the Jaguar E-type by driving a modern, half a million pound interpretation of this classic sports car before putting on a typically low key birthday party involving live music, classic fighter planes and a group of Royal Marines.
• Meanwhile, Richard Hammond is in South Africa to test a bigger, even more rugged alternative to the famous Hummer, while James May meets up with gold medal winning British Olympian Amy Williams for a wintry test of the latest Mini rally car.
• Plus, the power crazed BMW 1-series M is on the test track and another top celebrity guest takes their place in the Reasonably Priced Car.

Click here for the video




Watch the first episode of Top Gear series 17 which airs June 26, 2011. Top Gear series 17 episode 1 surround with Hammond reviews on the South African-made Marauder while Clarkson reviews the BMW 1M.

Also featured on the episode is when Clarkson makes a worthy homage to the Jaguar E-type for it’s 50th birthday and May competes at Lillehammer in a Mini John Copper Works WRC against Amy Williams. The guest star for this episode is the rock star Alice Cooper.

If you missed it on TV on its original air date then check out the full replay of the episode now via the link below.




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Toyota radio Wiring

Here are some wiring diagrams that I found handy when I was installing my stereo on my toyota.


Toyota radio Wiring

Acer Aspire 5735/5335/5735z memory upgrade not using all of the installed memory

My latest dilemma went for almost two days looking for a proper solution in vain. But finally managed to find a proper answer for my laptop memory upgrade dilemma.

It started when I upgraded my memory from 2GB to 4GB. The windows system properties was showing 4GB as installed RAM but due to mappings that fall between 2.90-4 GB it was unable to use all of the 4GB memory. So what am I suppose to do? Just be stuck with the fact that my well paid money go to waste.

So after going through various sites and from my own knowledge , I upgrade my 32bit version of Windows 7 to 64bit Windows to see it it works. na da. it didnt.

Ok next thing I wanted upgrade the BIOS just in case ACER has remapped everything so its customers can enjoy seeing and actually using whopping (:)) 4GB of memory.

So I had to visit ACER Europe and upgrade my BIOS to Version 1.10.

Here is the link from the Acer Europe site : http://support.acer-euro.com/drivers/notebook/as_5735.html

Select BIOS 1.10 from the drop down box in the BIOS section.

Voila... It worked. Now System properties shows that the machine is using 4GB of memory.

So case solved.

Guys so just try updating your BIOS just to see if it works for you too. and here is proof

FringOut Sucks!! Frequent dropped calls

Calls to Sri Lanka as low as 7.9c USD and 6.1c USD to land lines? sounds tempting? then read on.




Recently fringout brought down their rates. and Ive seen how they have kept it as a Xmas present to cover it up. But the truth is they are trying to grow their subscriber base and to be in the edge of the competition with Skype's much more brilliant SkypeOut service.

So I got to try out both services. Signed up for Skypeout with their monthly subscription and gave it a go. The calls were awesome and call quality was out of this world. No dropped calls etc. So high five for them.

Checked out fringOut as well just to call Sri Lanka since they were the only voip service offering the cheapest calls to date. But I got to say how calls began to drop every 3 or 4 minutes and it was just another pathetic attempt to get back at SkypeOut.

here are some screenshots of my fringout call records.

notice how I had to dial every time the calls drops. so annoying I know but as with any service who offers low cost calls , they have to relieve the pressure of the systems some how so I think it's all good when you look at in that perspective.

firesheep plugin for Firefox

Found this awesome plugin that can be used to test how secure your logins are when used with a non secured (open) wifi link. It basically captures the cookies as it passes by the wifi link. But keep in mind its pretty limited as in when you logout of you session (gmail, facebook, etc) it makes the cookie (if captured by someone) invalid. So making it impossible to login using the captured cookies.

here are some screen caps.

If you want to download the firefox addon click the link below

http://www.mediafire.com/file/kq1aoj334lch5lc/firesheep-0.1-1.xpi

Installing note :
open the file using firefox. right click on the file > open with > search and select firefox. (point to the firefox icon and select)

Emanage Ultimate Installation Files

Thought of helping out the fellow Greddy Emanage Ultimate users, I had a hard time finding these files when my Emanage ultimate installation Cd was Lost. So thought of making it easier for the guys to install it in one go.

 Extract and run the file labelled " Run this first" and then after the installation finishes run the second update to make version 2.2 which is the latest emanage ultimate software edition.

I have some maps as well if you guys wanna check them out or use it as sample for whatever use.


E-Manage-Ultimate_2.13_2.13_full.zip FULL VERSION INSTALL THIS FIRST

download the latest update 2.20 as at 4/9/2011 from the greddy web site

e-Manage Ultimate Update Software download (ver2.20)

http://www.greddy.com/tech-support/e-manage/

http://revspec.com/emanage/E-manage_Ultimate_Installation_Manual.zip