1. Ans. Any physical signal, such as a sound, or a light, or a voltage, is considered an analog signal. The thing about analog signals is that they are infinite in nature.
There are infinite numbers of sounds we can hear, there are infinite colors to perceive, and there are infinite numbers between the 1 and 2.
Digital on the other hand deals with discrete or finite signals or finite. There is only a ‘2’ between 1 and 3; no infinity.
As we can imagine, dealing with analog signals is very difficult. They are difficult to store and even more difficult to process. This is where analog to digital converters come into play.
2. Ans: Advantages of isochronous transmission-
(i)Transmission speed is much higher.
(ii)There is no need to pause between each character.
(iii)Start bit at the beginning of each character and Stop bit at the end is not required.
Disadvantages of synchronous transmission-
(i)Primary storage device is required.
(ii)Comparatively expensive.
(iii)Synchronisation between the source and target is required.
So, isochronous is better than synchronous.
There are infinite numbers of sounds we can hear, there are infinite colors to perceive, and there are infinite numbers between the 1 and 2.
Digital on the other hand deals with discrete or finite signals or finite. There is only a ‘2’ between 1 and 3; no infinity.
As we can imagine, dealing with analog signals is very difficult. They are difficult to store and even more difficult to process. This is where analog to digital converters come into play.
2. Ans: Advantages of isochronous transmission-
(i)Transmission speed is much higher.
(ii)There is no need to pause between each character.
(iii)Start bit at the beginning of each character and Stop bit at the end is not required.
Disadvantages of synchronous transmission-
(i)Primary storage device is required.
(ii)Comparatively expensive.
(iii)Synchronisation between the source and target is required.
So, isochronous is better than synchronous.