Question

Develop a python program to simulate the operation of logic AND gate. You should use the loop to operate the logic gate infinitely. This needs to implement one sequence as follows:

Loop

No LED (A and B) ON

PAUSE (2 seconds)

LED_A ON, LED_B OFF

PAUSE (2 seconds)

LED_B ON, LED_A OFF

PAUSE (2 seconds)

Both LEDs ON

PAUSE (2 seconds)

indicating 0 and 0

indicating 0 and 1

indicating 1 and 0

indicating 1 and 1

Answer 1

Code :

import time ## importing time library so as to pause for 2 seconds
def logic_and ():
   flag=1
   while (flag): ## This loop will run infinitely as we want operate logic gate infinitely.
   print ("0 0") ## print (0 0) Both LED are off
   time.sleep(2); ## Given a pause of 2 seconds
   print("0 1") ## print (0 1) LED A is On and B is off
   time.sleep(2);
   print("1 0") ## print (1 0) LED B is On and A is off
   time.sleep(2);
   print("1 1") ## print (1 1) Both LED are on
   time.sleep(2);

logic_and() ## This will call the above function

Output :

The loop will keep on performing operations of and gate till infinity.