what's the difference between an analogue and a digital circuit?

Answer 1

Digital is two state: 1 or 0, on or off.
Analog is not about on or off, it's about the actual level.

Answer 2

Analog is a continuous signal that, at any instant in time, is at the exact level it's supposed to be at.

A digital signal is a numerical (binary) representation of what the level of a signal is supposed to be when it's digitally sampled at regular intervals.

For example, if an analog signal increases from a level of 6 volts to 8 volts over 1 second, the transition is a smooth, continuous increase. If a digital signal increases from 6 volts to 8 volts over 1 second, it does so in increments with the value of each increment being determined by a binary value, depending on how often the original signal is digitally sampled.

Let's say the digital signal is a 4-bit signal and it samples every half second. When the voltage is at 6 volts, the digital signal will be a stream of 4 bits that equals 6 (0110). In a binary numbering system, the rightmost digit equals 1, the next digit equals 2, the next digit equals 4, the next digit equals 8, etc. So, the binary number 0110 is 0 eights + 1 four + 1 two + 0 ones = 6.

A half second later, the signal is digitally sampled again. And, assuming it's a linear transition from 6 volts to 8 volts over 1 second, the signal would be at 7 volts for the second sample. So, now the digital signal is 0111 (0 eights + 1 four + 1 two + 1 one = 7).

And, at the final sample at the end of the transition to 8 volts, the digital signal would be 1000 (1 eight + 0 fours + 0 twos + 0 ones = 8).

So, the composite digital signal from one second before the transition until one second after the transition would be:

0110 [pause 1/2 second] 0110 [pause - transition begins] 0111 [pause] 1000 [transition ends - pause] 1000 [pause] 1000

or, in other words, a bitstream that looks like this:

0110...0110...0111...1000...1000...1000

Answer 3

Analog signals are a continuous varing level, where digital signals are discrete. Analog signals are based on voltage levels where digital signals are a string of data of 0's and 1's (or as often said------- on's and off's). The key difference between analog and digital technologies is that analog technologies record and use waveforms as they are, while digital technologies convert analog waveforms into a binary set of numbers.

Answer 4

Hi,
On this site you find all the details about my favourite binary trading software http://www.goobypls.com/r/rd.asp?gid=551


I like it because it's very easy to use: NO complex charts? NO baffling analysis...
NO complicated methods... in fact nothing to learn at all! Check the site... (the proof videos are interesting)

Answer 5

the best trading software http://tradingsolution.info
i have attended a lot of seminars, read counless books on forex trading and it all cost me thousands of dollars. the worst thing was i blew up my first account. after that i opened another account and the same thing happened again. i started to wonder why i couldn,t make any money in forex trading. at first i thought i knew everything about trading. finally i found that the main problem i have was i did not have the right mental in trading. as we know that psychology has great impact on our trading result. apart from psychology issue, there is another problem that we have to address. they are money management, market analysis, and entry/exit rules. to me money management is important in trading. i opened another account and start to trade profitably after i learnt from my past mistake. i don't trade emotionally anymore.
if you are serious about trading you need to address your weakness and try to fix it. no forex guru can make you Professional trader unless you want to learn from your mistake.