#2497: Logic Gates explain

[The comic shows a chart with twelve electronic logic gates arranged in three rows of four. Each gate is depicted as a schematic symbol, with a label underneath. Above them is a header:]

Common logic gate symbols

[Here below follows a description of the 12 gates in the three rows, with their label given beneath each description:]

[A standard gate symbol used in real life. Two inputs on the left lead to the vertical left edge of a solid D-shaped symbol. From the right side of the D there is one output.]

AND gate

[A standard gate symbol used in real life. Two inputs on the left lead to a convex-crescent left edge of a crescent-shaped symbol. The right side of the crescent symbol’s shape forms a point at its output. From the right side of the crescent there is one output.]

OR gate

[A standard gate symbol used in real life. One input leads to a triangular symbol pointing to the right. There is a small bubble symbol connected to the triangle on the output, which leads right.]

NOT gate

[A standard gate symbol used in real life. This is identical to the OR GATE, except the output has a bubble attached, like the NOT GATE’s output.)

NOR gate

[A standard gate symbol used in real life. This is identical to the OR GATE, except the left-hand arc at the input has a double-stroked line.]

XOR gate

[A standard gate symbol used in real life. This is identical to the AND GATE, except the output has a bubble attached, like the NOT GATE’s output.]

NAND gate

[An unusual symbol. This symbol has one input on the left leading to a convex-crescent left edge, like the OR GATE. The output side as a smooth crescent like the AND GATE but has two outputs.]

NORX gate

[An unusual symbol. This symbol has two inputs on the left leading to a vertical left edge input, like the AND GATE. The output side has a convex-crescent double-stroked output like the mirror image of the XOR GATE’s input. There are two outputs.]

GAND ate

[An unusual symbol. This resembles the NOT GATE except there are two inputs instead of one leading into the left side.]

XAND gort

[An unusual symbol. This has a double-stroked convex-crescent input like the XOR GATE, but the two inputs have bubbles attached. The single output has a smooth crescent shape with a bubble, like a NAND GATE.]

NORG xort

[An unusual symbol. Two inputs lead to a convex-crescent edge, and the two lines of this symbol now enter a double-stroked convex-crescent input like the XOR GATE. The two lines of -this- symbol have bubbles placed half way across their horizontal length, and are presumably the outputs.]

ANDORX gant

[An unusual symbol. The symbol is identical to the NOR GATE, except the upper and lower horizontal parts of the symbols hull have a NOT GATE placed on them - one pointing to the left on the upper line, and to the right on the lower line. There is one output to the symbol, with a bubble attached.]

NORXONDOR gorgonax