38: Quiz#1: Base conversion , Name: ___________________________

• CS 340, Fall 2019, York College of Pennsylvania
• 41, 20 points, 2019-09-05 (at start of class)

This work/quiz is to be done without any assistance from anyone or any electronic or other device.

Given a blank piece of paper, you are to do the following.

On the left half of the page, write the numbers from 0 to 15, one per line. Do this in binary (left most column), hexadecimal (middle column), and decimal (rightmost column). Include the appropriate suffix for each number.

You will be given a decimal number in the range of 0 to 255. On the right part of the page, convert that number to base 2 and base 16 representation, including the appropriate suffix for each number. Clearly indicate each answer by drawing a box around just the answer for each part.

• Number: (omitted)

A functional requirement has to do with the functionality of what is asked.

A nonfunctional requirement does not have to do with the functionality of what is asked.

The method you use to convert the decimal number to hexadecimal and binary is a nonfunctional requirement.

There are many ways to do part 2 (part 1 also has many ways).

• Memorize all 256 possible representations for base 2 and 16 (not recommended, but would work).
• Use the repeated division algorithm.
• Use explicit powers of 2 and/or 16.
• Convert base 2/16 to/from base 16/2 using nibbles of the byte.
• ... and so on ...

You should find a method that works for you, since there are many methods that provide the same answer.

Common student question: "What do you mean by ...?".

Common teacher answer: "Read the question as stated and answer it as best you can.".