basic logic gates

basic logic gates

If you want to get an idea , enhance your knowledge about logic gates , obtain some application using logic gates 

Here you can know more and more about " logic gates " , " its symbols " , " summary of truth tables " , " logic ics ", " karnaugh map about these logic gates ", " flip flop" " counter " ," data sheets " and finally there are some questions & its answers

Logic gates are primarily implemented using diodes or transistor acting as electronic switch

Electronic logic gates differ significantly from their relay-and-switch equivalents. They are much faster, consume much less power, and are much smaller 

 Also, there is a fundamental structural difference

lets start 

Symbols & names & truth table

There are many logic gates and each one have its symbol and name to differ between each other and the operation of each one is determined by its truth table (truth table : illustrate the different states of input and the output in each time ) , logic gates specified by some ports which they called input port and output port . some of the logic gates may be have two input port , four input port ,three input port and eight input port and .. this will be shown during the explanation

      to get its symbols , names and its truth table

  there is a link to show all of them 

click here

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logic gates ic s

The practical logic gates didn't exist in the previous shapes , but there are many ic s contain these gates as the following figure

Logic gates are available on special ICs (chips) which usually contain several gates of the same type, for example the 4001 IC contains four 2-input NOR gates. There are several families of logic ICs and they can be split into two groups

(4000) series

(74)series

the following link accurately illustrate the series of  (4000)                                        click here
 

and for illustration the series (74)      click here

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 Karnaugh map

The Karnaugh map provides a simple and straight-forward method of minimising boolean expressions. With the Karnaugh map Boolean expressions having up to four and even six variables can be simplified

for illustration in details  

click here 

and 

click here 

  

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 flip flop   &&  Counter  

Here , there an abstract about counter and flip flop

we will illustrate it in individual topics because its very important applications and have many aspects which we have to know and understand it perfectly 

there a link to get an over view about counters and flip flops

for flip flops     click here

for counters     click here

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Data sheets

Here you can get all data sheets about the both series 4000 & 74

for series 4000       click here
 

for series 74           click here

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Questions

Here , there are about 22 questions and its solution for your revision 

for getting the link of the questions

click here  

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This link have an good explanation for all the above and simulation with lab view software program 

For basic gates and function           click here
 

For karnaugh map                            click here
 

For boolean algebra                        click here

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logic gates , truth table ,  whats about logic gates
over view about logic gates  , symbols of logic gates , function of the logic gates
logic gates ics , the practical shapes of logic gates , understanding karnaugh map
know more about counters , counters , flip flops , information about logic gates , boolean algebra