![]() ![]() Some of these control characters were used for instruments called teleprinters, so at the time they were useful (not so much now!)īut the control characters were things like 7 ( 111 in binary) that would make a bell sound on your PC, 8 ( 1000 in binary) that would print over the last character it just printed, or 12 ( 1100 in binary) that would clear a video terminal from all the text just written.Ĭomputers at this time were using 8 bits for one byte (they didn't always), so there were no issues. One byte (eight bits) was large enough to fit every English character, and some control characters too. ![]() With ASCII it can translate that into "Hello world". We didn't need to worry about any other characters and the American Standard Code for Information Interchange ( ASCII) was the character encoding that fit this purpose.ĪSCII is a mapping, from binary to alphanumeric characters. In the early days of the internet, it was English only. If all the text you're reading was once binary too, then how do we turn binary into text? Let's look at what we used to do back in the beginning. So 8 0's or 1's make up one byte.Įverything eventually ends up as binary – programming languages, mouse moves, typing, and all the words on the screen. One digit is called a bit, and a byte is 8 bits. Binary is the language of computers, and is made up of 0's and 1's. Introduction to EncodingĪ computer only can understand binary. I'll also cover some Computer Science theory you need to understand. I'll explain a brief history of encoding in this article (and I'll discuss how little standardisation there was) and then I'll talk about what we use now. Or even if you're just curious how words end up on your screen – yep, that's encoding, too. If you are coding an international app that uses multiple languages, you'll need to know about encoding. ![]()
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