Coding the Arduino by Bob Dukish

Coding the Arduino by Bob Dukish

Author:Bob Dukish
Language: eng
Format: epub, pdf
Publisher: Apress, Berkeley, CA


It gets a little confusing converting between different number systems; unfortunately, we have to go through the process because the everyday world is decimal, but computers are binary and can only deal directly with 1s and 0s. Fortunately for us, calculators and computers can easily make the translations. If you would like to perform the operation from our program on a scientific calculator, you can find each result by entering the base number 2 and then usually using the x to the y function to enter the power of two. It might be a second function key on your calculator. Usually the key is labeled xy. You would enter the number 2 as the base, shown as x, then press the xy key and enter the number for y, which would be the power of two for the exponent. You might need to consult the instructions for your specific calculator.

For a computer to understand what you are typing on a keyboard, there is an IC located inside of the keyboard case that, through the use of a matrix, associates each keystroke with its corresponding ASCII code number by generating a scan code. The code is needed because even though there are some numbers on a keyboard, there are letters, too (both lowercase and uppercase), in addition to punctuation and special functions. The group of experts who standardized the associative code gave a distinctive 8-bit number to represent all of the information on the keyboard.



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