Logic gates, Other Engineering

Assignment Help:

Logic Gates:

The term logic in electronics refers to the representation and logical manipulation of numbers usually in a code employing two symbols. i.e., bits.

An electronic logic circuit is one whose inputs and outputs can take only one of two states. Where the output of such a circuit depends only on the present state of the input to the circuit, it is called a COMBINATIONAL LOGIC CIRCUIT.

Logic circuits may have many inputs and many outputs and be made up of a large number of elements called LOGIC GATES.

Most modern electronic logic networks are constructed from two state components in the form of integrated circuits fabricated in a single piece of pure silicon and often referred to as a CHIP. They are available as transistor-transistor logic (TTL) and complementary symmetry metal oxide semiconductor (CMOS or COSMOS) which supersede earlier resistor-transistor logic (RTL) and diode-transistor logic (DTL).

Logic circuits are most widely used in computers and calculators, but their use also extends to a wide range of control and test equipment.

2221_logic gates.png

Figure shows the logic convention.

As the 'positive logic' representation is favoured by the majority of designers and manufacturers, it is intended to adopt this representation throughout this section. Positive logic refers to the use of a 1 to represent the true or more positive level (e.g. +5v) and 0 to represent the fault, or less positive level (e.g. 0v).


Related Discussions:- Logic gates

Identify people at risk - fire risk assessment, Identify people at risk: ...

Identify people at risk: It is often easy to forget that there may be people in a building who cannot move as quickly as the rest of us.  They may be in a wheel chair, they ma

Logic gate - not gate, THE INVERTER ('NOT' GATE) Figure shows the symbo...

THE INVERTER ('NOT' GATE) Figure shows the symbol for an inverter, where the output will produce the complement of the input. This device is often employed when the complement

Techniques of capital budgeting, Techniques of capital budgeting There are ...

Techniques of capital budgeting There are a number of capital budgeting techniques used in the evaluation of a project. They are broadly classified under two categories: 1] Discoun

Duct with flow control-aircraft maintenance, Duct With Flow Control-Aircraf...

Duct With Flow Control-Aircraft maintenance: BERNOULLI'S THEOREM This theorem can be related to the relationship between pressure and velocity existing in the air flowing

Measurements of economic worth, Measurements of Economic Worth There a...

Measurements of Economic Worth There are several methods of economic worth used to compare alternatives. If you decide to use present worth analysis, then you have indicate a

Mass Transfer, construction and working of counter flow tray

construction and working of counter flow tray

Finance, Derive the functional relationship between the no-arbitrage values...

Derive the functional relationship between the no-arbitrage values of the two vertical spreads.

Aerodynamics-boundary layers, Approach The Hanley solver does solve for ...

Approach The Hanley solver does solve for the boundary layer and potential flow (in a way we will think about later). However, it only gives us full access to the potential solu

What are debentures?, What are debentures?  A Debenture is " A document ...

What are debentures?  A Debenture is " A document of contract of loans which is given under the organization's press and provides a venture that the debenture owner will get a s

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd