# Computing Notes

• Created by: pvibrans
• Created on: 09-04-15 12:11

## Binary - Basics

• Computers use binary - the digits 0 and 1 - to store data.
• The smallest unit of data in computing is a binary digit, or bit
• Binary numbers are made up of  bits.
• The circuits in a computer's processor are made up of billions of transistors
• transistor is a tiny switch that is activated by the electronic signals it recieves.
• The digits and 1 reflect the on and off states of a transistor.
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## Binary - Bits and Bytes

Bits can be grouped together to make them easier to work with.

• A group of 4 bits is called a nibble
• A group of 8 bits is called a byte
• A group of 1024 bytes is called a kilobyte
• A group of 1024 kilobytes is called a megabyte
• A group of 1024 megabytes is called a gigabyte
• A group of 1024 gigabytes is called a terabyte
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Nibblemegabyte

bytegigabyte

kilobyteterabyte

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## Binary - test

Convert these binary codes into Base 10 numbers:

1. 1010

2. 10010

3. 1111

4. 1000001

5. 10011011

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1. 1010 = 10

2. 10010 = 18

3. 1111 = 15

4. 1000001 = 65

5. 10011011 = 155

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