these variables head 5 columns . In the first 4 columns draw all of the possible combinations of 1 and 0 . first row 0000 last row 1111 (16 possible combinations )
in each case 1 means a variable is true .and 0 means not true .
example 1in the red column means red .0 means not red . (on or off)
indicate in each row with a 1 or 0 when the output is true.
This problem is a simple example of the first step in the design process for one type of digital
system. The following is a simplified description of when you are allowed to move through an
intersection that is controlled by a traffic light with only a red and a green light (no yellow light).
You may move through such an intersection if the light is green and you are not turning left, or if
the light is red and you are turning right. Translate this situation into a 4-input, 1-output truth table. Define each binary variable that you use and give the meaning of a 0 or 1 value for each
variable.
