�ENCODING AND SENDING FORMATTED TEXT

We Will Chat Syllabus on Wednesday

PROTOCOLS

• Protocol- Rules and regulations we all agree to use
• information sent by a computer is encoded in bits, we need protocols to help us interpret these bits as meaningful information
• Last class we learned how to use the binary number system to allow us to represent numbers in bits
• How do we send text?
• We use the ASCII system

ASCII- BORN 1963

• American Standard Code for Information Interchange (ASCII)
• number-to-text encoding scheme used in computers and on the Internet
• numerical representation of a character such as 'a' or '@' or an action of some sort
• This protocol is 7 bits long and so can encode 128 different symbols, however the byte system is still used to send. 0 at front of 7 bits.
• Originally the encoding was designed for older printers and so the codes associated with the numbers 0-31 were designated as "control codes" which instruct the printer to perform certain actions. These codes are now largely out of use.

ASCII - VIDEO

ASCII

• Codes 32-126, however, contain many of the most commonly used symbols you use on the internet, including the lowercase and capital letters, the numbers 0-9, and most commonly-used punctuation marks
• Also used to represent all of the text formatting we use to add variety and emphasis to "plain-text" documents
• The ability to represent formatting using only ASCII symbols is the result of cleverly designed protocols

What does this say-

01010101 01010011 01000011

Casey - CONVERSION EXAMPLE

• My Example
• Casey
• 01000011 (67), 0110000 (97) What are next letters?
• Try Your Name… in Binary

​

COACH B��T-SHIRT

​

​

What does it Say?

Sending text messages is really sending binary numbers. It all comes back to zeroes and ones, always!

​

Binary is KING!!

There are online converters

(like this one) if you want to wimp out and cheat

ASCII- FUN SIDE

ASCII- ART

• ASCII art is a graphic design technique that uses the 95 ASCII printable (from a total of 128) characters
• ASCII art can be created with any text editor
• One of the main reasons ASCII art was born was because early printers often lacked graphics ability and thus characters were used in place of graphic marks
• ASCII art was also used in early e-mail when images could not be embedded
• This form of art dates way back…

ASCII ART

WEBSITES- ASCII ART GENERATORS

• ASCII Art Word Generator

WEBSITES- ASCII ART GENERATORS

• Picture to ASCII Art

Finished…

​

Do Code.org Lessons Please!

​

Your Class PEriod Code is on my Website.