In a nutshell please explain the difference between analog and digital communication systems ?

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eorge asks…

i have got an assignment to give five examples on each digital and analog systems?

i got this assignment in my new digital computer logic class plz help me out plzzzzzzzzzzzzzzzz

admin answers:

All natural systems are analog systems..

Values can vary to any level… And are not limited to zero and one..

Some examples
1. Human brains..
2. Thermometers
3. Voltage regulators for fans
4. Microwave ovens
5. Car and bike throttles

digital syatems..
1. Pc
2. Digital tvs
3.on off switches
4. One way valve..
5. Digital cameras.

Carol asks…

How do analog optical systems, digital optical computers and optical subsystems differ???

what is an example of each type as well

admin answers:

Analog means there are an infinite number of states between the highest and lowest. Digital means there are two states commonly referred to as high/low, on/off 1/0.
All computers these days are digital
Optical just means the signal is in the light spectrum instead of the electrical spectrum

Steven asks…

In a nutshell please explain the difference between analog and digital communication systems?

admin answers:

A rather simplistic explination but here goes.

Analogue communications systems send a series of waves with varying amplitutde and frequency, the frequency determins what sound is sent and the amplitude determins how loud it is. Signal strength directly affects amplitude so if your signal is week things may get quiet.

Digital comunications breakseverything down into a series of 1′s and 0′s (binary) and sends these as a stream to be rearanged at the other end. Signal strength has no detrimental effect as long as all the 1′s and 0′s get through (as no matter how weak they are they are still recognisable as a 1 or 0) but interferance occors if any data is lost (i.e. When a 1 or 0 does not get through due to too weak signal).

How do I get a better TV reception?

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Ken asks…

Why am I having problems with Verizon Wireless V-cast mobile TV reception on my Samsung U620 cell phone?

Do other phones have vcast reception issues?

admin answers:

You might want to go onto CNET.com and see if the streaming video quality for that type of phone is good or bad. That will at least tell you if it is the phone.

Charles asks…

How do I get a better TV reception?

I just moved into an apt. and I haven’t got satilite yet so i’m stuck watching basic tv. The problem is I get really poor reception. I thought it was just the antenna i had so i went out and bought a better one. Still nothing!! Is there anything i could do to improve the signal or do i just need to tough it out until i get my satilite?

admin answers:

Unfortunately, some locations cannot get good receptions from indoor antennas. You can try moving the set to a different location within the house nd/or purchase a reception booster from an electronic store (such as Radio Shack) but that might offer little help if any at all. What this means is that only an outside antenna (or cable) will help. If you are in an apartment erecting an outside antenna is probably not a choice that is available to you.
Sorry!

Chris asks…

Problems with HD TV Reception in Los Angeles?

I have two hd TVS and I recently purchase another one for my living room and to use after the digital transfer date. Since, yesterday I have been having problems with the new tv, but after checking I found that my other tv‘s were also skipping channels when you auto scan for digital channels. Now if I get ABC 7 I lose Fox 11 and so on every time I autoscan, I gain some channels and then I lose others . I purchase a Phillips HD 32dp antenna, but this has not solve the problem. Does anyone out here have suggestions or antennas to recommend?

Thanks

admin answers:

Hmm, I think that’s WHY they created Cable TV….to get rid of the erratic signal lock that people experienced daily with antennas.

Of course, people with OUTDOOR antennas rarely experienced signal problems except in severe storms.

So now you know….

Why Do We Need Digital Antenna In Sydney ?

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Mary asks…

What risks are associated with living in a studio in eastern Sydney?

Hi
Thank you for reading my question.
Can you please let me know what risks and pitfalls are associated with living in an studio apartment in the eastern suburbs?

Is there any specific pitfall or risk or problem with leaving in a flat 20+ floor (level) of a building?

What is the usual rent for a furnished studio in the northern and eastern suburbs?

Thank you very much.
I wanted to add some details to the question, I saw some studio in the advertisement websites like www.realestate.com.au and the renting is about 350, do thye have some problem which has a cheaper rent?
an example of these advertisement are the followinglinks:

http://www.realestate.com.au/cgi-bin/rsearch?a=o&id=403678967&f=0&p=30&t=ren&ty=&fmt=&header=&cc=&c=52898389&s=nsw&snf=ras-syd&tm=1230460052

http://www.realestate.com.au/cgi-bin/rsearch?a=o&id=403672637&f=0&p=30&t=ren&ty=&fmt=&header=&cc=&c=52898389&s=nsw&snf=ras-syd&tm=1230460052

The other question is about the safety and well being of suburbs, I read that I should avoid western and southern suburbs and only try to stay in eastern and northern suburbs and other suburbs are not good enough or are not safe. I want to know whether I focus on eastern or northern suburbs?

admin answers:

Not much really. The only problem if whether you can afford to rent there or not as the Eastern Suburbs is one of the most affluent areas of Sydney. It is a safe area with great beaches and shopping centres nearby. I would be worried about taking the elevators, especially if you live on the upper floors because in the event of a fire (forbid it will happen), it may be harder to evacuate. You shouldn’t let that be a main concern though. Take the stairs whenever you can.

EDIT: In regards to crime areas, you do not necessarily have to spend big bucks to get a place in the north or east to avoid crime. Some places in the Inner West such as Burwood and places in the south such as Hurstville or even the Shire are safe.

Linda asks…

What is the best Boarding School in the Eastern Suburbs of Sydney?

admin answers:

Http://www.australian-universities.com/

Laura asks…

PARTY FUNCTIONS AND HIRE HALLS IN SYDNEY EASTERN SUBURBS ?

Ok, so ive been absaloutley everywhere searching the internet for function centres and hired halls for 18th birthday parties and its truley imbossible. they always say we dont allow 18th birthday parties becasue of the bad expereinces we have and blah blah blah . Makes me dissapointed becasue i finally have my hopes up. I would really appreciate if anyone knows any places where its a function room more than hiring a hall and if its in the eastern suburbs where i can have my own DJ and where it can fit roughly 50 people and is cheap. I would really appreciate it thanks

If you can find a place just copy and paste the link at the bottom thankyouu.

admin answers:

Hiring halls for an 18th is a thing of the past due to mobile phones, gatecrashers violence and damages etc. Your best bet is at a function room in a club.