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ASCII

Explore how ASCII encoding translates letters, numbers, and symbols into 7-bit binary numbers for display and storage in computers. Understand the difference between control and printable characters and how this system enables text communication with keyboards and screens.

What is ASCII?

We have seen how we can represent a range of numbers in the language of computers, 11's and 00's. But we know that numbers aren’t the only thing that we can represent in a computer. So, there is still something missing when we think about how a computer understands what to display on the screen when we type a letter like “a”, or a symbol like “&” using the keyboard.

The answer is ASCII.

ASCII is simply a system that encodes letters and common symbols as decimal numbers. These numbers can then easily be represented and stored by a computer.

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How does it work?

ASCII uses 77 bits to represent one displayed character. The idea is to create a convention for encoding each character with one 77 ...