For example, how should letters with accents, umlauts, and additional symbols be represented? The rapid adoption of Computers in Europe presented a new challenge though: How to represent text in languages other than English. Over time, additional changes were made to some of the characters and control codes, until we ended up with the now well-established ASCII table of characters which is supported by practically every computing device in use today. This simplified character case detection/matching and the construction of keyboards and printers. Seizing the opportunity, the International Telegraph and Telephone Consultative Committee (CCITT, from French: Comité Consultatif International Téléphonique et Télégraphique) proposed a change to the ANSI layout which caused the lower-case characters to differ in bit pattern from the upper-case characters by just a single bit. The initial X3.4-1963 standard left 28 values undefined and reserved for future use. … and Microsoft gets a bad rap for naming things □ In 1963, the American National Standards Institute (ANSI) published the X3.4-1963 standard for the American Standard Code for Information Interchange (ASCII) – this became the basis of what we now know as the ASCII standard. The dawn of modern digital computing was centralized around the UK and the US, and thus English was the predominant language and alphabet used.Īs we saw above, the ~95 characters of the English alphabet (and necessary punctuation) can be individually represented using 7-bit values (0-127), with room left-over for additional non-visible control codes. Given this complexity, how do computers represent, define, store, exchange/transmit, and render these various forms of text in an efficient, and standardized/commonly-understood manner? In the beginning was ASCII Chinese, Japanese, Korean, Vietnamese, etc.) you’ll likely read and write text with a few more symbols … more than 7000 in total! Now add around 30 symbols for punctuation and you’ll need around 95 symbols in total. English, French, German, Spanish, etc.), chances are that your written alphabet is pretty homogenous – 10 digits, 26 separate letters – upper & lower case = 62 symbols in total. If you’re someone who speaks a language that originated in Western Europe (e.g. How hard can it be, right – it’s just letters? Noooo! Read-on! Representing Text ![]() The most visible aspect of a Command-Line Terminal is that it displays the text emitted from your shell and/or Command-Line tools and apps, in a grid of mono-spaced cells – one cell per character/symbol/glyph. Introducing the Windows Pseudo Console (ConPTY) API.The Evolution of the Windows Command-Line. ![]() This list will be updated as more posts are published: Posts in the Windows Command-Line series: In this post, we’ll discuss the improvements we’ve been making to the Windows Console’s internal text buffer, enabling it to better store and handle Unicode and UTF-8 text.
0 Comments
Leave a Reply. |