PROGRAMMABLE LOGIC PACKAGE
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ISBN: 9781260900620
Author: Petruzella
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Chapter 4, Problem 1P
Program Plan Intro
Logic gate:
- Logic gate is an electronic circuit that is used to perform logic decisions based on the input.
- It contains one or more number of inputs and one output.
- The working of logic gate is based on the binary principle that has two states either logic 0 or logic 1.
- The output of logic gate is produced when it satisfies any of its logic conditions.
- The logic condition depends upon the type of the gates and the number of inputs.
- The primary logic gates include AND, OR, and NOT and the combinations of these gates are used to implement any of the other logic gates.
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- Subject: digital logic design Q If 4 tanks are used as a water reservoir. It is important to keep check on those tanks which have gone empty. If a very basic check is required to check if 3 out of 4 tanks are empty or not, to make sure that water supplier should be called to refill reservoir tanks when there’s only one tank left with water and all other three are empty. You are required to make a basic logic expression and then make it’s circuit using basic logic gates, which can perform this task of identifying if any of three tanks are empty. Each empty tank can be used as logic ‘1’ and non-empty tank as logic ‘0’.arrow_forwardAnalysis using De Morgan’s Theorem:1. deduce Boolean expressions for the outputs X and Y of the unknown circuit in terms ofthe inputs A, B and C. 2. design a logic circuit using only NAND gates which will behave in the same way as theunknown circuit.arrow_forwardA majority circuit is a combinational circuit whose output is equal to 1 if the input variables have more 1’s than 0’s. The output is 0 otherwise.1. (a) Design a three-input majority circuit by finding the circuit’s truth table, Boolean equation, and a logic diagram.2. (b) Write and verify a HDL gate-level model of the circuit.arrow_forward
- A. Write the boolean equation directly from the following circuit. B. Crearlt the truth table for the circuit above.arrow_forwardFor the following combinational logic circuit, a static zero hazard occurs when??arrow_forwardDesign a combinational circuit with four inputs— A, B, C, and D —and one output, F . F is to be equal to 1when A = 1, provided that B = 0, or when B = 1, provided that either C or D is also equal to 1. Otherwise,the output is to be equal to 0.1. Obtain the truth table of the circuit.2. Simplify the output function.3. Draw the logic diagram of the circuit, using NAND gates with a minimum number of ICs.4. Construct the circuit and test it for proper operation by verifying the given conditions.arrow_forward
- a) Write the Boolean expression for output x in the circuit. b) Create a complete analysis table for the circuit by finding the logic levels present at each gate output for each of the 16 possible input combinations. Hint: You can use nodes/intermediate columns in truth table after each logical gate operation to facilitate the work. Which is the answer? I need all the steps to understand, thanks.arrow_forwardUse the following state diagram and create the state table for a synchronous to detect the sequence. The circuit has a single input, x, and a single output z. The output is logic-1 whenever the input sequence 1001 is detected, logic-0 otherwise. Note that overlapping sequences are allowed, Create the initial state table, and the complete state table. Write the equations for all the state variables and the output z.arrow_forwardQuestion: The following switch network is given (the designations a, b, c, etc. Indicate the states in which the switch is closed: a is closed at a = 1; c is closed at c = 0). a) Find the logical equation Y for a single switch so that it replaces the entire network! b) Transfer the logical function into a K map diagram! c) Write down the logical equation minimized using the K map diagram! d) Draw the logic circuit using only NAND gates and inverters! e) Draw the circuit as a simplified switch network!arrow_forward
- Develop a logic circuit necessary to meet the following requirements: A battery-powered lamp in a room is to be operated from two switches, one at the back door and one at the front door. The lamp is to be on if the front switch is on and the back switch is off, or if the front switch is off and the back switch is on. The lamp is to be off if both switches are off or if both switches are on. Let a HIGH output represent the on condition and a LOW output represent the off conditions. The design must include the use of a chip with logic gates and the use of VHDL code.arrow_forwarddraw the logic diagrams (using gates) of the positive-edge triggered T and JK flip-flops understand how flip flops are working by poking the inputs and then practically obtain the function tables of the T and JK flip-flops;arrow_forward3. A COMBINATIONAL CIRCUIT IS DEFINED BY THE FOLLOWING THREE BOOLEAN FUNCTIONS. DESIGN THE CIRCUIT WITH A DECODER AND EXTERNAL GATES F1= X'Y'Z' + XZ F2= XY'Z' + X'Y F3= X'Y'Z + XYarrow_forward
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