UCSD, ECE 25
Excerpt: ... ECE 25 Introduction Lab 2 3-Bit Exclusive-Or Gate The goal of this lab is to generate our first design using the programmable chip by implementing a 3-bit XOR gate . We also generate the same gate by using the NAND gates introduced in Lab 1. Prelab due Friday Before Lab turn in BEFORE lecture. Goal: Use Project Navigator to implement a 3-bit X-OR gate using two 2-input XOR gate s. This requires learning the tool. Both a written and video tutorial from the company that makes the boards are available on the class Web site. Following these tutorials, print out both the schematic of the 3-bit XOR gate and the timing diagram from Modelsim which shows all 8 possible output states. Remember that the inputs and outputs of your circuit need to be labeled using the format listed in the written tutorial ("Using Project Navigator") on the Lab Web Site. Failure to follow the labeling procedure will result in a zero grade for the Pre-lab. You also need to hand draw out a schematic for 3-bit XOR gate using only 2-bit N ...
UCSD, ECE 25
Excerpt: ... ECE 25 Lab 2 3-Bit Exclusive-Or Gate Introduction The goal of this lab is to generate our first design using the programmable chip by implementing a 3-bit XOR gate . We also generate the same gate by using the NAND gates introduced in Lab 1. Prelab due Friday Before Lab turn in BEFORE lecture. Goal: Use Project Navigator to implement a 3-bit X-OR gate using two 2-input XOR gate s. This requires learning the tool. Both a written and video tutorial from the company that makes the boards are available on the class Web site. Following these tutorials, print out both the schematic of the 3-bit XOR gate and the timing diagram from Modelsim which shows all 8 possible output states. Remember that the inputs and outputs of your circuit need to be labeled using the format listed in the written tutorial ("Using Project Navigator") on the Lab Web Site. Also remember that the tutorial is an example of a schematic, however it is not the same one that you are being asked to create here; after completing the tutorial, ...
Rensselaer Polytechnic Institute, ECSE 2610
Excerpt: ... imised form is: F = (W+Z').(W+Y').(W'+Y+Z).(W'+X'+Y).(X'+Y'+Z) The Sop from is preferrable, due to lesser number of gates needed. -2) A significant hint in the question is the use of the circuit to check parity. The simplest parity checker is the XOR gate . the truth table of the XOR gate is: 0 0 1 1 0 1 0 1 0 1 1 0 Hence, the circuit can be thought of as checking for an odd number of 1s in the input consisting of 2 bits. To extend this idea to multiple inputs, just cascade a number od XOR gate s. For 5 inputs, XOR the first 2 inputs, then XOR the output of this gate with the third input and so on. This however will produce an odd parity checker. Eventually, an Inverter must be used before the actual output can be observed. Alternatively, a truth table for 5 inputs can be constructed, and the circuit impemented using AND/Or gates. ...
Minnesota, D 1315
Excerpt: ... 74LS86 Quad 2-Input XOR Gate s Positive Logic Y = A B = AB + AB ...
Michigan State University, ECE 410
Excerpt: ... works have the same input signals (b, c, a) and each of the operations is complemented within the other network, i.e., all series combinations in pMOS are parallel combinations in nMOS. Homework 1 Solutions p. 4 Problem 6 (Design Challenge) a) As discussed in lecture, the XOR and XNOR CMOS schematics are very similar; they have exactly the same structure but two of the inputs are different. Based on this, construct a gatelevel schematic (no transistors, just gate symbols) for a circuit that uses only one XOR gate to implement both XOR and XNOR functions. The symbol for the CMOS XOR gate is shown below, having inputs a, a (NOT a), b, and b (NOT b). A signal S should be used to select between the XOR and XNOR function. You can use any additional INV, MUX, NAND and NOR gates needed to implement this function. The completed gate should only have inputs M, N, and S and output Z such that: if S = 0, Z = M XOR N if S = 1, Z = M XNOR N a a b b XOR s 0 1 2:1 MUX out out XOR symbol 2:1 MUX ...