Set the input switches P and C to 5v. Again, since PR and CLR are active low inputs, this will make them both inactive. Toggle the input T several times. The circuit should behave exactly like the circuit in Activity 1.1.6, Set the input switch P to GROUND and C to 5v. What is the state of the two outputs? Toggle the input T several times. Record what effect this has on the two outputs. Set the input switch P to 5v and C to GROUND. What is the state of the two outputs? Toggle the input T several times. Record what effect this has on the two outputs. Let us examine a simple binary counter. Counters are one of the most common applications of The circuit that we will be observing is called a two-bit binary counter. The counter will count from zero (00 in binary) to three (11 in binary). Using the Circuit Design Software (CDS), enter the two-bit binary counter shown below. Use a switch for the input Clock-In and probes for the outputs A and B. Start the simulation. In Activity 1.1.6 we learned that the output on the first flip-flop (A) changes only when the Clock-In goes from low to high. Toggle the input Clock-In (switch T) until both outputs A and B are both low and switch T is low. Now cycle switch T (Cycle means to toggle from low to high back to low) and record what effect this has on the two outputs in the table below. Clock-In A B Initial Values 0 0 1st Cycle of switch T 2nd Cycle of switch T 3rd Cycle of switch T 4th Cycle of switch T 5th Cycle of switch T
Set the input switches P and C to 5v. Again, since PR and CLR are active low inputs, this will make them both inactive. Toggle the input T several times. The circuit should behave exactly like the circuit in Activity 1.1.6, Set the input switch P to GROUND and C to 5v. What is the state of the two outputs? Toggle the input T several times. Record what effect this has on the two outputs. Set the input switch P to 5v and C to GROUND. What is the state of the two outputs? Toggle the input T several times. Record what effect this has on the two outputs. Let us examine a simple binary counter. Counters are one of the most common applications of The circuit that we will be observing is called a two-bit binary counter. The counter will count from zero (00 in binary) to three (11 in binary). Using the Circuit Design Software (CDS), enter the two-bit binary counter shown below. Use a switch for the input Clock-In and probes for the outputs A and B. Start the simulation. In Activity 1.1.6 we learned that the output on the first flip-flop (A) changes only when the Clock-In goes from low to high. Toggle the input Clock-In (switch T) until both outputs A and B are both low and switch T is low. Now cycle switch T (Cycle means to toggle from low to high back to low) and record what effect this has on the two outputs in the table below. Clock-In A B Initial Values 0 0 1st Cycle of switch T 2nd Cycle of switch T 3rd Cycle of switch T 4th Cycle of switch T 5th Cycle of switch T
1.2.4.a_sequentiallogicdesign_counters_dms.docx