Computing Notes

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  • 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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Reminder

Nibble - 4 bits (http://nice-animals.com/wp-content/uploads/2013/03/mouse-and-cheese-03.jpg)Nibble(http://www.argentus.com/wp-content/uploads/2012/02/megaphone.png)megabyte

(http://www.intellectualpropertymagazine.com/incoming/article95634.ece/ALTERNATES/w940/032-033.jpg)byte(http://0f9837bb1d8aa610a84a-102a6ca990457d67fd96fbe768cb23f2.r50.cf3.rackcdn.com/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/g/r/grestch-5420t-electromatic-electric-guitar-sunburst.jpg)gigabyte

(http://iconbug.com/data/11/256/899f1158cf5d6c75ef1176ea9c8b9360.png)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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Binary - answers

Check your answers to see if you got them correct.

1. 1010 = 10

2. 10010 = 18

3. 1111 = 15

4. 1000001 = 65

5. 10011011 = 155

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