Rock-paper-scissors (microbit)

Rock-paper-scissors (microbit)

Objectives

• Define and use variables

• Variable data types

• Storing input to variable

• Conditional Statement

What is variable?

• Store value in computer program

• The value can be coming from input, results of calculations or just anything you want to store

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Try defining variables in REPL mode

Fill in the Blank

What is the value of variable A, after all the following code executed.

A = 10

Fill in the Blank

What is the value of variable B, after all the following code executed.

A = 5

B = 10

C = 11

Fill in the Blank

What is the value of variable B, after all the following code executed.

A = 5

B = 10

A = A + B

Fill in the Blank

What is the value of variable A, after all the following code executed.

B = 10

C = 2 + 3

Variable types

• Each variable, when defined, will be assigned a data type

• There are a few data types in Python:

Types in python

• int or integer

• float, which stores numbers with decimals

• string, for text, note when referring to string, we need to put a pair of double quote, e.g. "This is string", "10"

• bool, stands for boolean

Boolean

• Boolean is a special type that allows two possible values only: True and False

• Boolean is for logical statement

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Multiple Choice

What is the data type for the following variable A:

A = 15

• int

• float

• string

• boolean

Multiple Choice

What is the data type for the following variable A:

A = 1.5

• int

• float

• string

• boolean

Multiple Choice

What is the data type for the following variable A:

A = "15"

• int

• float

• string

• boolean

Multiple Choice

What is the data type for the following variable A:

A = True

• int

• float

• string

• boolean

Multiple Choice

What is the data type for the following variable A:

A = 3 > 4

• int

• float

• string

• boolean

Getting button press in Microbit

Try in REPL mode

Open Ended

Quick Review:

What is the command if we want to output a string "X" on the microbit LEDs?

Rock paper scissors device - 1

• IF Button A is pressed, then display "R"

• IF Button B is pressed, then display "P"

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Open Ended

What is the logical statement, if we want to know if both button A and B is pressed?

Now complete the Program

also Add Press A+B will display "S"

Extended Activity

• Try, instead of displaying text, display an image to represent Rock paper and scissors

• Refer to the following document:

• https://microbit-micropython.readthedocs.io/en/stable/tutorials/images.html