UNIT 6

UNIT 6

2.     Describe the "three pillars" of computational thinking

i)              Abstraction striping down a problem to its bare essentials and/or capturing common chracteristics or actions into one set that can be used to represent all other instances.

·         Decomposition

-       Refomulating a seemingly difficult problem into one we know how to solve

·         Abstraction

-       Pulling out the important details

-       Identifying principles that apply to other situations

-       The concept of computer scince (queue vs stack)

-       Example :

a) people standing in line at the store (queue-first in first out)

b) set of tennis balls in their container (stack- first in last out)

-        The concept of computer scince (tree vs graph)

-       Example :

 a) Files and directories on a hard disk (tree- to organize the object)

 b) My closest friends on Facebook/Twitter (graph- to connect the object  with other object)

ii)             Automation using a computer as a labour saving device that executes repetitive tasks quickly and efficiently.

iii)            Analysis validating if the abstractions made were correct.