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Instructions for lab 1 of cpsc 5155, where students are introduced to the multimedia logic emulation tool from softronix. The lab focuses on using tools, placing switches, wires, and leds, and understanding the switch control and lack of a power supply. Students are guided to download the tool, place components on the grid, and run simulations.
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The purpose of this lab is for the student to become familiar with the Multimedia logic emulation tool from Softronix, Inc. The focus of this lab will be the following.
Place the mouse cursor on the seventh tool from the left (Toggle Palette) and click it. What one sees should resemble the following. Move the palette over to the right of the window to get the following. I do not like to have my controls placed on my work space. Actually, you may place the control anywhere. Move the mouse cursor over the icons in the palette and identify the functions. I get Row 1: Selector, Wire, Node Row 2: AND, OR, XOR
It is now time to place a wire. Select the Wire control on the palette (middle of the top row). When you select this, each of the two circuit elements placed on the grid will display with a single dot; the switch will have a dot to its right and the LED with a dot to its left. After selecting the Wire control, click first on the dot for the switch and move the mouse to the dot to the left of the LED, while holding down the mouse button. You should see a wire drawn connecting the two. Here, you see that I have drawn the wire “crooked”. This is not a problem. If you are a “neat freak” like me, you can use the Selector tool to move either control to make the wire straight. Go to the menu bar, select the Simulate menu tab, and then click on Run. With the simulation running, click on the switch. The LED should turn on and off.
Those of us who are more used to design of electrical circuits would find the above only a partial circuit and expect to see something like the following. This circuit shows the power supply explicitly, as well as the use of the ground connection to complete the circuit. Apparently, this tool supplies these features automatically. Those of us who do not work with circuits may feel free to ignore the figure above and just use the tool. Next place two more switches, connect them to input of an AND gate, and connect the output of the AND gate to a LED. Run the simulation. I get the following. This screen shot was taken with the simulator running, so that neither the grid nor the tool palette is visible. You should note that there are four possible combinations for the switch positions: (OFF, OFF), (OFF, ON), (ON, OFF), and (ON, ON). Record the status of the LED for each of these four possibilities.