# So Computers know only binary language, how does it understand to show for example letter “R” or number “3” on a Computer screen? Or how do impulses of power to make it 1 or 0 making computer understand to display certain things such as letters on the screen?

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So Computers know only binary language, how does it understand to show for example letter “R” or number “3” on a Computer screen? Or how do impulses of power to make it 1 or 0 making computer understand to display certain things such as letters on the screen?

In: Technology

Each figure has it’s own string of ones and zeroes that specifically describe it. So, for example, a capital G is 10001110101. Meaning the combination of on, off, off, off, on, on, on, off, on, off, on, in binary creates the signal to display a “G”.

Binary – Base 2 (0 and 1) is just a convenient way to represent the numbers you know and love.

What the computer “knows” is how to covert the “R” to ascii value 82, then converts the number 82 (base 10) to 1010010 (base 2).

The computer can then easily represent that binary number in hardware as a series of on/off states.

Binary isn’t just on and off. It can also be certain voltages.

For example, the computer has an internal clock that counts each binary digit. Each one is a few milli seconds in length.

A voltage over 5V would be a 1. Then a few milliseconds later if the voltage is below 5V the next figure will be a 0