EXPERIMENT 3 The purpose of this experiment is to learn to design and use the monostable multivibrator (one-shot) circuits. The 555 timer IC will be used here because it is very versatile and commonly utilized for such applications. The use of the 555 timer as a one-shot is shown in Figure 7-53 in the textbook. Equation 7-3 provides the formula for determining the pulse width for given values of R and C components. Both of these can be found on page 406 of the electronic version. 1. Getting a single pulse on the push of a button Build a circuit in Multisim to provide a single pulse on the push of a button. To do this, suitably connect the push button output to the trigger input of the 555. Since it is not easily possible to display a single pulse on the oscilloscope, you will have to use an LED to watch the output. Select R and C values to provide a pulse width of about 100 ms, so every time you push the button, the LED flashes. Provide a screenshot of the simulation. It is not likely that you will be able to catch the flash. Try reducing the pulse width. The flash will get dimmer and will disappear when the duration is too small. Provide the value of the pulse width when the flash ceases to be discernible. The number will vary with lighting conditions, and may also be different from person to person. 2. Getting a pulse on every clock pulse Remove the push button input and suitably connect the output of the digital clock instead. Since repeated pulses are now going to be produced, it will be possible to use the oscilloscope to monitor these, so we can drop the pulse width and also the pulse generation frequency. Of course, you have to ensure that the pulse is significantly smaller than the time period of the clock. So, if you select a clock frequency of 1 kHz, its time period will be 1 ms, and you should probably select 0.2 ms as the pulse width of the one-shot. Select the external R and C values for the desired pulse width, and set the appropriate frequency on the digital clock. Connect the one-shot output to channel 2 of the oscilloscope, and connect channel 1 of the oscilloscope to the output of the digital clock, so you can see the timing relationship of the one-shot output pulses with the digital clock input. Provide a screenshot of the simulation.

Can you explain and provide images or drawings of the simulation I will use to construct the circuit in virtual simulation.