computing: a further elaboration of the logic gates
in the last blog post we presented logic gates in an introductory manner.
in this blog post, we will go over some more topics about logic gates, touching all of the fundamental logic gates(even the introductory parts) , and in the following blog posts we will touch on digital design and electrical engineering.
INTRODUCTION
logic gates are building blocks for electronic circuits, they perform fundamental logical operations to carry out some sort of process to output some result.
almost all of the electronic devices present in our world today have, in some sort, a logic gate performing logic.
in the real world, the logic gates are composed of many transistors, which are basically the more simple building blocks of any circuit.
ALL OF FUNDAMENTAL LOGIC GATES AND WHAT THEY DO
the AND gate - the and gate takes two inputs and returns true only if both the inputs are true.
the OR gate - the or gate takes two inputs and returns true if ANY of the inputs are true.
the NOT gate - the not gate returns the opposite of the input.
the NAND gate - the nand gate is the result of the and logic gate piped into the not logic gate. so basically, where the AND gate returns true the NAND gate returns false and vice-versa.
the NOR gate - the nor gate is, like the nand gate, the or logic gate piped into the not logic gate, thus, providing, whenever fed two inputs, the opposite of what the or gate would output in that situation of inputs.
the XOR gate - the xor gate is basically the or gate, but, when the inputs are BOTH true, they return false; it is the same as the or gate in the rest of the situations.
the XNOR gate - the xnor gate is the opposite of the xor gate. wherever the XOR is true XNOR is false and vice-versa.
- something to note: all of the rest of the logic gates are, in some form, a combination of the AND, OR & NOT gates. that is why they are referred to as the basic logic gates.
CONCLUSION
in this blog post, we have elaborated further upon the logic gates (just as said before) and we will, in the following posts touch up on everything else about logic gates (mainly having to do with subjects which are more academic) and after that, we will touch upon the digital design and electrical engineering parts of computing.
by zasbir.