Why binary system use in computer?

Answer 1

Because CPUs (heart of computer) main part consists of triggers - electronic devices that can be in one of two possible states: charged, discharged. So, one trigger can store one binary digit. Combining triggers in rows we can store big binary digits. Adding combinational logic we can perform basic ariphmetics.

Answer 2

Because the earliest computers were simply banks of switches. Switches normally only have two positions - on & off. This is represented in binary as 1 or 0 (one or zero). Even in today's ultra-modern computers, inside the micro-chips, the same situation applies - lots of microscopic switches moving at ultra-fast speed.

Answer 3

It is much easier to design circuits that can have two different states, than ten. Also, the addition table and multiplication table, for example, get very simple this way. It seems that the need to convert from binary to decimal and vice versa is a minor drawback in comparison.

Answer 4

The circuitry that makes up the inner workings of a computer comes from transistor type circuits. The transistor circuits are configured to have only two states. This could be measured as a voltage (for example the output voltage is either 5 volts or zero volts). Therefore each state is represented by a one(1) or zero(0). Normally, if there is voltage present, then the value is 1, and zero voltage present, then it is a 0. I gave an answer very similar to this one for another question asking about Boolean algebra and computers

Answer 5

All electrical switches have two states: ON and OFF. Binary is simply the digital representation of these two states: 1=on 0=off.

Answer 6

The basic level of computer can only understand two states. On and Off. (Zero and One). It's a combo of Zeros and Ones that make up strings that can be understood.

Answer 7

That makes circuits much simpler than trying to use the decimal system internally.