Notes:

Unit 3 Lesson 1-2: 0.98/1

Unit 3 Lesson 3-4: 0.9/1

Unit 3 Lesson 5-7: 1/1

Unit 3 Lesson 8 & 10: 1.8/2 = 0.9/1

Unit 3 Lesson 12-13: 0.85/1

Unit 3 Lesson 14-15: 0.95/1

Unit 3 Lesson 16: 0.9/1

Unit 3 Lesson 17-18: (not graded)

Vocabulary:

Unit 2… Binary/Data Terms

  • bits: The smallest unit of data that a computer can process and store. A bit is always in one of two physical states, similar to an on/off light switch. The state is represented by a single binary value, usually a 0 or 1.

  • bytes: A byte is a unit of data that is eight binary digits long. A byte is the unit most computers use to represent a character such as a letter, number or typographic symbol. 00000000 - 11111111

  • hexadecimal / nibbles: Hexadecimal is a numbering system with base 16. It can be used to represent large numbers with fewer digits. In this system there are 16 symbols or possible digit values from 0 to 9, followed by six alphabetic characters – A, B, C, D, E and F. It can be used for colors, ex. #FCD0E0

  • boolean: true or false value

boolean

  • ASCII: most common character encoding format for text data in computers and on the internet

  • Unicode: the universal character representation standard for text in computer processing.

  • RGB: (red, green, and blue) refers to a system for representing the colors to be used on a computer display.

  • Lossy: Lossy is a data encoding and compression technique that deliberately discards some data in the compression process

  • Lossless: restores and rebuilds file data in its original form after the file is decompressed

Unit 3… Algorithm/Programming Terms

  • variable: used to store information to be used and referred to

variable

  • data types: integer, strings, boolean, lists, dictionaries

  • lists: abstract data type that represents a finite number of ordered values

  • dictionaries: an abstract data type that defines an unordered collection of data as a set of key-value pairs

lists/dict

  • assignment operators:
    • addition: a + b
    • subtraction: a - b
    • multiplication: a * b
    • division: a / b
    • MOD: a % b

operators

  • algorithm: commands that do a certain task

  • sequence: the order in which the statements are executed

  • selection: a section of code is run only if a condition is met.

  • iteration: a repeating portion of an algorithm, repeats a specified number of times or until a given condition is met

iteration

  • characters: a display unit of information equivalent to one alphabetic letter or symbol

  • expressions: combination of operators/operands

truth tables

  • AND: 1 1
  • OR: 0 1, 1 0, 1 1
  • XOR: 0 0, 1 1

  • NOT: 0

  • length: number of characters in a string

  • concatenation: combining two things

  • upper/Lower: change case

  • traversing Strings: use index

  • if: do an action when something is true

  • elif: first condition false, test another

  • else: action when first condition false

  • nested selection: condition inside condition

if

  • for: action for each x in y

  • while: loops as long as condition true

  • break: end loop

  • continue: keep loop

forloop

  • def: defining a function to do a procedure

  • parameters: values given to a function to work with

  • return: brings variables out of function after running

def