The History Behind the Third Day’s Code: ASCII

The most popular and long-lived encoding language is called ASCII (American Standard Code for Information Interchange). With this system all of the letters of the alphabet, all of the numerals, and many of the punctuation characters can be described in a form that computers can work with. An ASCII character is stored in a single byte, which is eight bits. Traditionally the eighth bit of the character was reserved as an error-checking bit, so altogether there were seven bits to work with. Binary is base two, so there are two to the power seven values that can be represented – this is why ASCII codes run from zero to 128. — Excerpted from The Book of Codes, page 273.

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Tips and Tricks for the Crack the Code Sweepstakes

While reviewing each day’s video, the pause/play button and forward/backward controls are your friends. Use them often and to great effect.

For those new to Twitter, here’s a great explanation of how to direct message.

If you miss your chance to send your solution to the day’s code, you’ll have more chances to win as the week progresses, with a big chance to win $100 in UC Press books at the end of the week in our Grand Prize Drawing. You can always find the rules for the Sweepstakes here.