Introduction to Binary

Starter

Starter – Morse Code

Morse code stater activity

morse-code

 

Morse Code worksheet link

What is binary?

What is binary?

Binary is any system that consists of only two forms.

For example:

  • 1 or 0
  • True or False
  • On or Off
  • Voltage or No Voltage
  • Light or Dark
  • Black or White

Topic 1 Introduction to binary

Why use binary?

Why do computers use binary?

 

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Summary

  • Binary data can be transmitted easily and reliably.
  • Binary data can be stored and read very easily and reliably.
  • Computers use circuits that can only be on one of 2 states – on or off, these work very well with binary calculations.
  • The input voltage in to computers is not very stable, so only a system that use voltage/no voltage would be reliable.

What do the binary numbers represent?

Depending on what data is being stored, binary above could represent:

  • Text / Numbers
  • Images
  • Sound
  • Instructions

computer-binary

 

Bits, Bytes,Nibbles

Bit   – e.g. 0

Each individual 1 or 0 is known as a bit.

Here are three bits – 110

Byte – e.g. 11001100

Each group of 8 bits is known as a Byte

Here is a stream of Bytes:

01010011 01101011 01111001 01110010 01101001 01101101 00100000 01101001 01110011 00100000 01100001 01110111 01100101 01110011 01101111 01101101 01100101 00100001

Nibble – e.g. 1111

A nibble is 4 bits, or half a Byte.

Here is a nibble – 1101

 

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