9/5/2023 0 Comments Logicworks 5 symbolYou will need to install an update patch LW4Update.exe that is available from or 2 Tutorial #: Introduction to LogicWorks 4 2. Objectives o To build the following turn-signal circuit. o To verify function of the circuit with no device delay. o To find the output of the circuit, assuming -unit delay per gate. O To export the circuit diagram and waveform to PowerPoint or Word. 6,6 Left(L) 8,8 Flash(F) 4,4 Right(R) Left_turn(LT) Right_turn(RT) L R F LT RT X X X X 2.2 Starting LogicWorks 4 on your laptop After you start LogicWorks 4, you should see a tool palette, a simulation palette, a schematic circuit and symbol editor window, a timing diagram window, and a device library palette. 2.3 Obtaining and placing gates in schematic window On the device library palette, choose Simulation Gate.clf with the left mouse button. Double click the left mouse button to pick AND-2. Press one of the four arrow keys on the keyboard to change orientation of the device. Each time the left mouse button is pressed a copy of the chosen device is placed on the schematic window. Click the right mouse button to drop the device. Do the same for two-input OR gates OR-2 and inverters that is denoted NOT gate in the library. You can rearrange the gate positions by picking one up and dragging it with the left mouse button. You can copy a gate by choosing it and choosing Edit->Copy (Control-C) and then Pasting it. 2.4 Connecting gates To connect two pins with a wire, select the end of one pin with left mouse button and pressing and dragging the cursor to the end of the other pin. The wire can be placed piece by piece at right Jianjian Song LogicWorks 4 Tutorials (5/5/3) of 4ģ angles by dragging and releasing the wire. A replaced wire can be rerouted by selecting and dragging it in any direction. 2.5 Labeling inputs and output signals and pins Click on the text icon (button with letter A) in the Tool Palette. Use the pencil to pick a wire to be named by clicking on the wire. If your pencil is close to a pin, you may pick a pin instead of a wire. You can number the pin by giving it a pin number. Pin numbers can be seen by right clicking on a device and choosing Device Info->Pin Info. By default, pin numbers are in blue and signal names are in pink. Type a name for the wire and then press the enter key. The name can be dragged to another location while still associated with the same wire.Ī signal name can be changed by double clicking on it and then making a change. Conflict will occur if two wires have the same name. Label all the signals as shown in the given circuit. 2.6 Connecting binary switches to input pins Select Simulation IO.clf in the device library palette. Therefore, an XNOR gate is true only when the two inputs are the same.Connect one binary switch to one input signal of the circuit. The XNOR gate follows the same conventions as above, and acts like an XOR gate whose output is then fed into a NOT gate. For example, the two inputs '1' and '0' would produce a true ('1') output, but the two inputs '1' and '1' or '0' and '0' would produce a false ('0') output (this is conventionally named "exclusive or"). The XOR gate is true when the inputs are opposite of each other, but false when they are equal. Therefore, it is true only in the case where both inputs are zeroes (the only case that would have made an OR gate output a '0'). The NOR gate is essentially an OR gate whose output is then fed into a NOT gate. Therefore, it is true in all cases except for when both inputs are '1'. The NAND gate is essentially an AND gate whose output is then fed into a NOT gate. it will flip a '1' to a '0' and a '0' to a '1'). The NOT gate takes in one input and inverts that input (i.e. The OR gate takes two inputs and evaluates to true when either one of its inputs are true (or if both inputs are true - this is conventionally named "inclusive or"). outputs a '1') when both of its inputs are true, or false otherwise. The AND gate takes two inputs and evaluates to true (i.e. The logic gates include: AND, OR, NOT, NAND, NOR, XOR and XNOR. These gates are used in combinational and sequential circuit design. You have a multitude of different logic gates that operate within a computer.
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