Truth Tables
Circuits & Gates
Basics of Python
Python Statements
Create a Python Program
100
What are the three main types of logic used for truth tables?
And, or, not
100
How are or, if, & and gates represented?
100
What is the difference between the = and == operators?
= is to assign a value to a variable
== is used to compare the value of two variables
100
What does "elif" mean?
"else if" -- used when you need another if statement
100
Write a program that requests a percentage grade from the user and tells them what their letter grade is. If they input a negative number, tell them that is not a grade.
A = 90-100
B = 80-89
C = 70-79
D = 60-69
F = less than 60
def grade():
percentage_grade = int(input("What is your percentage grade?"))
if percentage_grade >= 90:
print("Congrats! You have an A")
elif percentage_grade >= 80:
print("Nice job! You have a B")
elif percentage_grade >= 70:
print("You have a C")
elif percentage_grade >= 60:
print("You have a D")
elif percentage_grade < 60:
print("You are failing")
elif percentage_grade < 0:
print("How do you have a negative grade? Try again")
grade()
200
In notation, how are and, or, & not logic represented? (Hint: how would we notate them in a statement)
AND: ∧ and ·
OR: ∨ and +
NOT: ¬
200
What are the definitions of gates and circuits?
Gate - performs a Boolean logic operation on one or more binary inputs and then outputs a single binary output
Circuit - a model of computation in which input values proceed through a sequence of gates, each of which computes a function.
200
What is the definition of modulus?
The remainder of a number after division of a certain number.
200
What does the operator "in" do?
Determines if a value is in a selection of values
200
Write a program that asks a user to input a number. If it is divisible by 5, return the number. If not, print no output.
def divisible_by_five():
number = int(input("Please enter a number"))
if number%5 == 0:
print("Your number,", number, "is divisible by five")
divisible_by_five()
300
Fill in the following truth table, with ~ meaning not.
p ~p q ~p∧q
0 1 0 0
0 1 1 1
1 0 0 0
1 0 1 0
300
Create a circuit from the following:
A ∧ (B ∨ C)
You got it
300
What is the result of this command? print ("5" + "3")
A) 8
B) "8"
C) "5" + "3"
D) 53
D) 53
300
What would the output be for the following program?
si_days = ["Monday", "Wednesday", "Sunday"]
days_free = ["Wednesday", "Saturday", "Sunday"]
if "Monday" in si_days and "Monday" in days_free:
print("You should go to SI on Mondays")
elif "Wednesday" in si_days and "Wednesday" in days_free:
print("You should go to SI on Wednesdays")
elif "Sunday" in si_days and "Sunday" in days_free:
print("You should go to SI on Saturdays")
>> You should go to SI on Wednesdays
>> You should go to SI on Sundays
300
Write a program that checks if "dog" is in the following list:
pets = ['cat', 'hamster', 'dog', 'bird', 'guinea pig']
pets = ['cat', 'hamster', 'dog', 'bird', 'guinea pig']
if 'dog' in pets:
print("Yes, a dog is a pet")
400
Write a truth table for the following:
(¬A) ∧ (B ∨ C)
A B C ¬A B ∨ C Output
0 0 0 1 0 0
0 0 1 1 1 1
0 1 0 1 1 1
0 1 1 1 1 1
1 0 0 0 0 0
1 0 1 0 1 0
1 1 0 0 1 0
1 1 1 0 1 0
400
Create a circuit for the following sequence:
(A ∧ B) ∨ (¬B ∧ C)
You got it
400
How do you limit input to only integers, floats, or strings?
str(input(
float(input(
int(input(
400
What is the result of the following code, given an input of -1?
number = int(input("Enter an integer number: "))
if number >= 1:
print("Your number is greater than 10")
elif number ==0:
print("Your number is 0")
There would be no output.
400
Write a program that tells the user when to set their alarm clock. If they input that it is Saturday or Sunday, they need to wake up at 9 AM. If it is Monday, Wednesday, or Friday, the need to wake up at 7 AM. If it is Tuesday or Thursday, they need to wake up at 6 AM. If they enter something besides a day, tell them that is not a valid input. Additionally, make the input not case sensitive.
day = input("What day is it?")
if day == "Saturday" or day=="saturday" or day == "sunday" or day=="Sunday":
print("You need to wake up at 9:00 AM")
elif day=="Monday" or day=="monday" or day=="Wednesday" or day=="wednesday" or day=="friday" or day=="Friday":
print("You need to wake up at 7:00 AM")
elif day=="Tuesday" or day=="tuesday" or day=="Thursday" or day=="thursday":
print("You need to wake up at 6:00 AM")
else:
print("That is not a day of the week")
500
Write a truth table for the following circuit:
A B ¬A A∨B ¬A∧B (¬A∧B) ∨ (A)
0 0 1 0 0 0
0 1 1 1 0 1
1 0 0 1 0 1
1 1 0 1 0 1
500
Write a truth table for the circuit below:
See slideshow
500
What is the result of 127 % 21?
1
500
Consider the following example:
lst = [1, 2, 3]
print(1 in lst)
What would the output be?
True
500
Write a program that asks a user for the time, rounded to the nearest hour. Then, calculate and print what time it will be in four hours using a 12-hour clock (e.g, 1 pm instead of 13:00)
time = int(input("What time is it currently, rounded to the nearest hour? "))
in_four_hours = (time+4)%12
print(in_four_hours)