Source: https://guthlabs.ai/docs/instruments/logic-gate-circuit-simulator/implementation/

instrument implementation / implementation-contract

# Logic Gate Circuit Simulator implementation

A source-bound implementation contract for Logic Gate Circuit Simulator; deployment and executable qualification remain separate.

Status: **VERIFIED_CLEAN**Lifecycle: **implementation-contract**

## Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

**Record owner**: Guth Instruments

**Lifecycle**: verified-clean

**Evidence ID**: t6-112

**Effect**: Computation or source lookup only

## Input and validation requirements

A cyclic netlist such as a NOT gate whose output is wired to its own input has no stable Boolean result. If accepted without cycle detection, live propagation may oscillate or fail to converge; the simulator should reject it or report undefined output.

## Required corrections

No binding erratum is attached to this unique-name record. Implementers must still preserve the declared units, domain, and failure behavior.

## Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

````
{
  "inputs": {
    "circuit": [
      {
        "id": "xor1",
        "gate": "XOR",
        "inputs": [
          "A",
          "B"
        ],
        "output": "X"
      },
      {
        "id": "and1",
        "gate": "AND",
        "inputs": [
          "A",
          "B"
        ],
        "output": "C"
      }
    ],
    "values": {
      "A": 1,
      "B": 0
    },
    "requested_outputs": [
      "X",
      "C"
    ]
  },
  "expected_outputs": {
    "X": 1,
    "C": 0
  },
  "working": "1. XOR gate: X = A XOR B = 1 XOR 0 = 1 because the inputs differ.\n2. AND gate: C = A AND B = 1 AND 0 = 0 because at least one input is 0.\nStable outputs: X = 1, C = 0."
}
````

## Other records

[01**Overview**](<https://guthlabs.ai/docs/instruments/logic-gate-circuit-simulator/>)[02**Mechanism**](<https://guthlabs.ai/docs/instruments/logic-gate-circuit-simulator/mechanism/>)[04**Qualification**](<https://guthlabs.ai/docs/instruments/logic-gate-circuit-simulator/qualification/>)

## Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

- `VERIFIED_LEDGER.json`

- `evidence-tranche6/tranche6-results.json`