The applet below creates problems for you to practice calculating the ranges of values which can be represented in various number formats used in computers. You will either be given a format and asked to compute the largest or smallest number which can be represented using that format, or given a number and asked for the number of bits required to hold it. When you have computed your answer, enter it in the box and then click on the "Check Answer" button to find out if you did the problem correctly. You may try the same type of problem by clicking on the "Same Problem" button, or choose to practice with either the next type in sequence ("Next Problem" button) or a random type of problem ("Random Problem" button).

Note that in the case of signed quantities, the smallest number is the **most negative** number representable in the format.

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©2002, Kenneth R. Koehler. All Rights Reserved.