Logic Gates¶
Logic gates can be drawn by importing the logic module:
from SchemDraw import logic
Typical AND, OR, NAND, NOR, XOR, XNOR, and NOT gates with 2, 3, or 4 inputs are predefined. Anchors are defined as ‘in1’, ‘in2’, etc. for each input, and ‘out’ for the output.
Two functions are available to generate gates with higher number of inputs, including invert-bubbles on the inputs.
The andgate() and orgate() method:
-
SchemDraw.logic.andgate(inputs=2, nand=False, inputnots=[])¶ - Parameters
inputs (int) – number of inputs
nand (bool) – add invert bubble on the output, making a NAND gate
inputnots (list) – Input numbers (starting with 1) that have invert bubble
- Return type
dict
- Returns
element definition dictionary
-
SchemDraw.logic.orgate(inputs=2, nor=False, xor=False, inputnots=[])¶ - Parameters
inputs (int) – number of inputs
nor (bool) – add invert bubble on the output, making a NOR gate
xor (bool) – draw as exclusive-or gate
inputnots (list) – Input numbers (starting with 1) that have invert bubble
- Return type
dict
- Returns
element definition dictionary
As an example, the following line generates a 3-input NAND gate with one input pre-inverted.
gate = logic.andgate(inputs=3, nand=True, inputnots=[1])
