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March 31, 2011
about 11 months ago
I found this device to be very helpful in constructing a simple audio mixer. I wrote up the details in this github repository.
News - Enginursday: Exploring th…
about a year ago
About the battery-backed RTC, have you seen the Radxa Rock? It is a heavyweight board in this class, with quad-core and 2GB RAM.
about 2 years ago
I think the ASCII table is a really important fundamental of software and programming. Understanding ASCII means you understand something about:
I have 2 daughters who are a little young to get all of the above yet, but right now with my first grader I am focusing on this analogy:
CHARACTER is to STRING as LETTER is to WORD as DIGIT is to NUMBER
To elaborate this, we talk about letters in the alphabet, uppercase/lowercase, 52 in all, enumerating the 10 digits, n-letter words and m-digit numbers. Now if we write something like “100 cats”, what is this? It’s got both letters and digits. Let’s call it a string of characters. How many characters in “100 cats”? Do we count the space? Can we have 2 spaces? What if we write each character in a box? Etc… I could keep going, but this is about where my first grader is now. This isn’t as physical as many of the other examples. We could use train cars or real boxes to make the analogy more physical, but for now we just use a whiteboard.
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