The correct answer is: C. all elements of digital circuit are from the same family
Digital circuits are easier to design than analog circuits because they only have two states: on and off. This makes it much simpler to create logic gates and other components that can be used to build complex circuits. Analog circuits, on the other hand, have to be able to represent a continuous range of values, which makes them much more difficult to design.
Here is a brief explanation of each option:
- A. they do not control electricity precisely over a wide range
This is not necessarily true. Digital circuits can be designed to control electricity precisely over a wide range. However, they do not need to be as precise as analog circuits, which is one of the reasons why they are easier to design.
- B. they are made in the form of ICs
This is true, but it is not the main reason why digital circuits are easier to design. ICs can be used to make both digital and analog circuits. The main reason why digital circuits are easier to design is because they only have two states.
- C. all elements of digital circuit are from the same family
This is the main reason why digital circuits are easier to design. All digital circuits are made up of logic gates, which are devices that can be used to perform basic operations such as AND, OR, and NOT. Logic gates are all from the same family, which means that they all work in the same way. This makes it much easier to design digital circuits than analog circuits, which have to be able to represent a continuous range of values.
- D. they are smaller in size
This is not always true. Digital circuits can be made smaller than analog circuits, but it is not always necessary. The main reason why digital circuits are easier to design is because they only have two states.
- E. None of the above
This is the correct answer. The main reason why digital circuits are easier to design is because they only have two states.