Logic gates are in fact the building block of digital electronics; they are formed by the combination of transistors (either BJT or MOSFET) to realize some digital operations (like logical OR, AND, INVERT ). Every digital product, like computers, mobile, calculators even digital watches, contain logic gates. The use of logic gates in digital world can be understood better by the following example: the single bit full adder in digital electronics is a logic circuit which perform the logical addition of two single bit binary numbers (a,b,cin) a and b are the the two binary number of single digit (either 1 or 0) and cin is the carry input . say for example a,b,cin= 1,1,1 gave an logical sum output of 1 and a carry of 1 , a,b,cin= 110 gave sum= 0 and carry of 1. Now this adder can be formed by the combination of many gate like by using NAND gates only. or by using XOR , AND ,OR gates and so on. So, in a nutshell, the adder which is of great importance in your computer processor and also in many more applications is basically built from the logic gates.
combinational circuit
hazards in combinational and sequential circuits
Because it is a very efficient language for describing their operation as well as a tool to assist in design optimization (reducing the cost of the circuit when built).
a sequential circuit is an interconnection of combinational circuit and storage elements.The storage elements is called flip-flop,store binary information that indicates the sequentiol circuit at that time.
It was mentioned that there are two different ways to connect two or more electrical devices together in a circuit. They can be connected by means of series connections or by means of parallel connections. When all the devices in a circuit are connected by series connections, then the circuit is referred to as a series circuit. When all the devices in a circuit are connected by parallel connections, then the circuit is referred to as a parallel circuit. A third type of circuit involves the dual use of series and parallel connections in a circuit; such circuits are referred to as compound circuits or combination circuits. The circuit depicted at the right is an example of the use of both series and parallel connections within the same circuit. In this case, light bulbs A and B are connected by parallel connections and light bulbs C and D are connected by series connections. This is an example of a combination circuitBy EngineerMuhammad Zaheer Meer GMS
combinational circuit
hazards in combinational and sequential circuits
combinational circuit is depend only on inputs,like sequential circuits its not depend on previous outputs.
both combinational and sequential circuits have two inputs and outputs..!
which are used to describe the digital hardware of the system
There is one main difference between combinational ALU and sequential ALU. Combinational ALU depends only on present circuits, and sequential ALU depends on both the present and the past.
AND logic gate is used to obtain the product of two digits. It is used in various combinational and sequential circuits.
The combinational logic circuits are a type of logic circuits containing only logic gates (AND, OR, XOR, NOT, NAND, NOR) and its output only depends on the current input (do not have memory).
A combinational circuit's output depends only on its current inputs. This means, it has a truth table. A sequential circuit's output depends on its previous inputs. This means, it's output will depend on which state it is.
nothing in electronic logic circuits.relay logic circuits often use solenoids as the electromagnetic coils of the relays.
combinational ALU
Combinational chutiye