MTEL Digital Literacy and Computer Science

Category - Digital Lit and CS

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The original basic ASCII character set was developed prior to the invention of the computer and was used for teletype machines. It encoded a set of characters using the decimal numbers from 0 to 127. How many bits were needed to encode a character in ASCII?

Explanation

Correct Response: B. 7 bits can encode 128 characters or decimal numbers 0 – 127. A is incorrect because 4 bits can encode 16 characters or decimal numbers 0 – 15. C is incorrect because 8 bits can encode 256 characters or decimal numbers 0 – 255. D is incorrect because 16 bits can encode 65,536 characters or decimal numbers 0 – 65,535.

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