Circuit (circuit)

Circuits are an essential part of the anatomy of mechanical beings, especially Transformers. They regulate a diverse range of functions, not all of which are equally applicable in differing eras of Cybertronian history.

Bio-Circuits

The function of Bio-circuits is not explicitly stated, though by context it can be inferred that they are vital to a Transformer's continued functioning. After Starscream almost accidentally destroyed the Solar Needle, Megatron threatened to permanently deactivate his bio-circuits. Changing Gears

Logic Circuits

Logic circuits are a component of Transformer anatomy that is charged with intelligence and reasoning out confusing situations. In the Beast Wars cartoon, these circuits were especially important due to the increased reliance on beast modes. With the acquisition of beast modes, there came instance of the beast mode's instincts influencing the logic circuits. When Inferno came online, his beast mode convinced him that he was a real fire-ant, and that his stasis pod was his colony Spider's Game. Later, the Predacons stole the shielding system of the Axalon, forcing the Maximals to remain in beast mode to avoid Energon buildup, all the while under bombardment and suffering from sleep deprivation. Eventually, their beast modes came to override their logic circuits. Only with Tigatron's help did they overcome their baser instincts. Call of the Wild

Implying that another Transformer has no logic circuits is a common (mild) slur on their character.Double Jeopardy

Memory Circuits

Memory circuits are a component of Transformer anatomy that allows them access to their memories. They can be bypassed in order to make them "forget" certain things such as who their enemies are.

In the Generation 1 cartoon, Soundwave was hit after he downloaded the contents of a computer mainframe which caused him to lose the information he collected. The Insecticon Syndrome

As well, after capturing the Dinobots on Cybertron, the Decepticons bypassed their memory circuits in order to make them willing slaves in the Cybertonium Pits. Desertion of the Dinobots, Part 2

In the Beast Wars cartoon, Tigatron's revival from his stasis pod left him with damaged memory circuits and made him believe that he was an animal like Snowstalker. Fallen Comrades

Oral Circuits

A Transformer's oral circuits are related to vocalization. In the UK Marvel Transformers comic Prowl cleared his oral circuits to cover up his daydreaming during one of Optimus Prime's boring lectures. The Magnificent Six!

In the live-action movie, Bumblebee had his "vocal processor" damaged in a battle with the Decepticons, rendering him unable to communicate with other species, though still able to communicate over inter-Autobot frequencies. Ratchet had been having trouble fixing them ever since. Transformers (2007)

It is unknown how, if at all, the vocal processor and oral circuits are related. They may coexist, or they may be different devices which serve the same purpose.

Reason Circuits

Reason circuits are a component of Transformer anatomy that governs their capacity to reason. They are evidently distinct from logic circuits. In the Generation 1 Cartoon Red Alert, after being damaged by a missile from Rumble, became paranoid due to damage made to both his Logic Circuit and Reason circuits. Auto Berserk

Servo Circuits

Servo circuits are essential for a Transnformer to remain standing, without them they collapse as if paralyzed.

Among Rattrap's bag-of-tricks is a key-sized device which can disrupt another Transformer's servo circuits and disable Transformation. The device works only at extremely close range and appears to be single-use; he throws it away after. Double Jeopardy

Truth Circuits

Truth circuits measure and assess the accuracy (or possibly credulity) of spoken statements.

Optimus Primal refrains from offering Megatron the conversational pleasantry 'glad to see you' rather than risk burning his own out. Before the Storm

From Teletraan I: The Transformers Wiki, a Wikia wiki.