## B6- Counting by 16's- How We Talk to Computers

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### Industries / Subjects / Grades

##### Industries / Pathways
• Engineering & Architecture

### Introduction

Because computers work best working with multiples of 2, computer programmers often find it easier to work with alternate numbering systems that are based on powers of 2. The most used of these systems is hexadecimal, which is based on 16 digits rather than 10. To create 16 digits, programmers use the letters for the digits beyond 9. This creates much confusion, as hexadecimal numbers often appear to be words rather than numbers.

Total Time 2.5 Hours.

### Student Objectives / Goals

#### Related Instructional Objectives (SWBAT...)

• Students will be able to recognize and properly understand hexadecimal numbers and hexadecimal notation.

### Student Objectives / Goals

#### Related Instructional Objectives (SWBAT...)

• Students will be able to properly understand and use hexadecimal numbers and hexadecimal notation.
• Students will be able to convert between decimal and hexadecimal numbers.
• Students will understand why hexadecimal numbers are used in programming when they are used.

Total Time
0 Hours

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