computing

• Decomposition - breaking down big tasks into smaller ones 
• Abstraction - ignoring details that are not needed to solve a problem 

   
•  

   Pattern matching - When you find patterns or similarities and repeat them to make the task easier to understand. 

   
• Trial and improvement – trying  new ideas and understanding why they failed/learning from mistakes 

    

   
• hex:

  1 - 1

  2 - 2

  3 - 3

  4 - 4

  5 - 5

  6 - 6

  7 - 7

  8 - 8

  9 - 9

  10 - A

  11 - B

  12 - C

  13 - D

  14 - E

  15 - F
• for x in range (4) :

  turtle.forward(100)

  turtle.right(90)
• common errors in turtle:

  • spelling errors
  • not spelling colour 'color'
  • wrong sized angles
• integer - A whole number  
• boolean - True or false  (FIRST LETTER MUST BE CAPITAL )
• string -  Collection of words, symbols, letters or numbers in inverted commas  
• print example - print("in the red room there is a red rug") 
• casting from integer to string - str(<value>) 
• Casting from string to integer - int(<value>) 
• penetration testing -  a security exercise where a cyber-security expert attempts to find and exploit vulnerabilities in a computer system. 
• A computer network is a system that connects two or more computing devices for transmitting and sharing information.
• An embedded system is a combination of computer hardware and software designed for a specific function.