thomasabishop/eolas
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Autosave: 2022-12-27 10:00:06

Browse source
This commit is contained in:
thomasabishop 2022-12-27 10:00:06 +00:00
parent a0a8a599f5
commit c82fc36fe4
1 changed files with 7 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
Electronics_and_Hardware/Digital_circuits/Logic_gates.md
View file

@ -14,7 +14,7 @@ tags: [logic-gates, binary]
Logic gates are the basic building blocks of digital computing. **A logic gate is an electrical circuit that has one or more than one input and only one output.** The input controls the output and the logic determining which types of input (on/off) lead to specific outputs (on/off) is isomorphic with the truth-conditions of the [Boolean connectives](/Logic/Truth-functional_connectives.md) specifiable in terms of [truth tables](/Logic/Truth-tables.md). Logic gates are the basic building blocks of digital computing. **A logic gate is an electrical circuit that has one or more than one input and only one output.** The input controls the output and the logic determining which types of input (on/off) lead to specific outputs (on/off) is isomorphic with the truth-conditions of the [Boolean connectives](/Logic/Truth-functional_connectives.md) specifiable in terms of [truth tables](/Logic/Truth-tables.md).
Physically, what 'travels through' the gates is electrical current and what constitutes the 'gate' is a [transistor](/Electronics_and_Hardware/Digital_circuits/Transistors.md) responding to the current. Going up a level of abstraction, the current/ charge is identified with a bit. It is bits that go into the gate and bits which come out: binary information that may be either 1 or 0. Physically, what 'travels through' the gates is electrical current and what constitutes the 'gate' is a [transistor](/Electronics_and_Hardware/Digital_circuits/Transistors.md) responding to the current. Going up a level of abstraction, the current/ charge is identified with a [bit](/Electronics_and_Hardware/Binary/Binary_units_of_measurement.md#binary-units-of-measurement). It is bits that go into the gate and bits which come out: binary information that may be either 1 or 0.
## NOT gate ## NOT gate
@ -33,6 +33,8 @@ Physically, what 'travels through' the gates is electrical current and what cons
### Interactive circuit ### Interactive circuit
<iframe src="https://circuitverse.org/simulator/embed/not-gate-aeb5f9e5-9f58-4883-b8e5-d70f6d023185?theme=default&display_title=false&clock_time=true&fullscreen=true&zoom_in_out=true" style="border-width:; border-style: solid; border-color:;" name="myiframe" id="projectPreview" scrolling="no" frameborder="1" marginheight="0px" marginwidth="0px" height="250" width="500" allowFullScreen></iframe>
## AND gate ## AND gate
> The AND gate represents the truth conditions of the [conjunction](/Logic/Truth-functional_connectives.md#conjunction) truth functional connective > The AND gate represents the truth conditions of the [conjunction](/Logic/Truth-functional_connectives.md#conjunction) truth functional connective
@ -52,6 +54,8 @@ Physically, what 'travels through' the gates is electrical current and what cons
### Interactive circuit ### Interactive circuit
<iframe src="https://circuitverse.org/simulator/embed/and-gate-b6937338-e83f-474b-af79-854b39c151a3?theme=default&display_title=false&clock_time=true&fullscreen=true&zoom_in_out=true" style="border-width:; border-style: solid; border-color:;" name="myiframe" id="projectPreview" scrolling="no" frameborder="1" marginheight="0px" marginwidth="0px" height="250" width="500" allowFullScreen></iframe>
## NAND gate ## NAND gate
> The NAND gate inverts the truth conditions of AND. > The NAND gate inverts the truth conditions of AND.
@ -71,6 +75,8 @@ Physically, what 'travels through' the gates is electrical current and what cons
### Interactive circuit ### Interactive circuit
<iframe src="https://circuitverse.org/simulator/embed/nand-gate-60613ab9-9562-445e-9883-c4ea1920e206?theme=default&display_title=false&clock_time=true&fullscreen=true&zoom_in_out=true" style="border-width:; border-style: solid; border-color:;" name="myiframe" id="projectPreview" scrolling="no" frameborder="1" marginheight="0px" marginwidth="0px" height="250" width="500" allowFullScreen></iframe>
NAND is a **universal logic gate**: equipped with just a NAND we can represent every other possible logical condition. In practice with circuits, it is more efficient to use specific dedicated gates (i.e OR, AND, NOT etc) for the other Boolean connectives but in principle the same output can be achieved through NANDs alone. NAND is a **universal logic gate**: equipped with just a NAND we can represent every other possible logical condition. In practice with circuits, it is more efficient to use specific dedicated gates (i.e OR, AND, NOT etc) for the other Boolean connectives but in principle the same output can be achieved through NANDs alone.
## OR gate ## OR gate