Activity 2.1.2 Binary Numbers & Conversion

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Activity 2.1.2 Binary Numbers & Conversion
Introduction
Have you ever wondered why we use the base-ten, or decimal, number system? Of
course, we have ten fingers. The decimal number system that works so well for us is
completely incompatible with digital electronics. Digital electronics only understand
two states, ON and OFF. This is why digital electronics use the base-two, or binary,
number system. In order for you to be able to design digital electronics, you will need
to be proficient at converting numbers between the decimal and binary number
systems.
In this activity you will learn how to convert numbers between the decimal and binary
number systems.
Equipment
 Paper & Pencil
 Calculator (preferable one with a number base conversion feature)
Procedure
1. Complete the following decimal-to-binary number conversions. An example problem
is shown below. If available, use the base conversion feature of your calculator to
check your answers.
Example:
19
= __?__
(10)
(2)
Solution:
Answer:
19
= 10011
(10)
(2)

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