How can binary coding be used to convey words?

I found this online translator, and it translate between binary and words, and it actually works. How does this work?How can binary coding be used to convey words?
One bit corresponds to one transistor in memory. One byte consists of 8 bits. Every letter or character occupies one byte (or 8 bits) of memory. The standard used to assign those 8-digit binary numbers to every letter, numeral, and other character is called ASCII.How can binary coding be used to convey words?
it gives each letter a number such as: a-1 b-10 c-11 d-100 e-101 etc. then it just converts that to english
The letters of this answer are being produced using binary, probably using something called ASCII, where each letter of the alphabet is assigned an agreed-on number (a=65, b=66, etc...) and then those number are represented as binary codes (so a=1000001,b=1000010, etc).
binary uses zeros and ones like an on off switch. zero is off and one is on. binary is a huge compilation of series of off/on commands. each letter is assigned a series of off/on protocols. actually every that uses the word digital works off of this principal, on off on off on on off on on on off off offf off on on on off on on off off