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Converting text to binary
Converting text to binary
When computers were first invented most text was represented in binary using the ASCII (American Standard Code for Information Interchange).
Converting text to ASCII formatted binary is a simple process. You simply look up the decimal value for the character in the ASCII table below, and then convert that value from decimal to binary,
Example – hello
ASCII Table
DO NOT USE THE HEX COLUMN!!!
Converting Binary to Text
Converting Binary to Text
Converting from binary to text is nice and simple. You simply convert each binary number to a decimal number and then look up that number on the ASCII table.
Practice
Practice
Convert these text examples to binary:
a. dog
b. cat
c. mouse
Convert these binary examples to text:
d. 01100101 01100111 01100111
e. 01101000 01100001 01101101
f. 01100011 01101000 01101001 01110000 01110011
Limitation of ASCII
Limitation of ASCII
ASCII can only be used save text that uses the roman alphabet ( mainly English) so it cannot be used for Arabic, Chinese, Cyrillic, etc.
Doesn’t include any special characters (like wingdings)
Because of these limitations new formats were introduced (such as UFT and Unicode). These allowed computers to use millions of different characters, alphabets and special characters (such as emojis, non-roman alphabets and mathematical symbols.
Activity - Time to Update your learning log
Activity - Time to Update your learning log
If your teacher hasn’t already set you up this document in Google Classroom, then click on the link below to make a copy of the Binary unit learning log.
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