Circuit Visualization
Click on the input buttons (a, b, d) to toggle their states and observe how the outputs change. Double-click on components to inspect them in the browser console.
Circuit JSON Representation
This is the JSON circuit definition that DigitalJS uses to render and simulate the full adder:
Devices
{
"dev0": {
"type": "Button",
"label": "a",
"net": "a",
"order": 0,
"bits": 1
},
"dev1": {
"type": "Button",
"label": "b",
"net": "b",
"order": 1,
"bits": 1
},
"dev2": {
"type": "Button",
"label": "d",
"net": "d",
"order": 2,
"bits": 1
},
"dev3": {
"type": "Lamp",
"label": "o",
"net": "o",
"order": 3,
"bits": 1
},
"dev4": {
"type": "Lamp",
"label": "c",
"net": "c",
"order": 4,
"bits": 1
},
"dev5": {
"type": "Or",
"label": "or",
"bits": 1
},
"dev6": {
"type": "Subcircuit",
"label": "ha1",
"celltype": "halfadder"
},
"dev7": {
"type": "Subcircuit",
"label": "ha2",
"celltype": "halfadder"
}
}Connectors
[
{
"to": {
"id": "dev6",
"port": "a"
},
"from": {
"id": "dev0",
"port": "out"
},
"name": "a"
},
{
"to": {
"id": "dev6",
"port": "b"
},
"from": {
"id": "dev1",
"port": "out"
},
"name": "b"
},
{
"to": {
"id": "dev7",
"port": "b"
},
"from": {
"id": "dev2",
"port": "out"
},
"name": "d"
},
{
"to": {
"id": "dev3",
"port": "in"
},
"from": {
"id": "dev7",
"port": "o"
},
"name": "o"
},
{
"to": {
"id": "dev4",
"port": "in"
},
"from": {
"id": "dev5",
"port": "out"
},
"name": "c"
},
{
"to": {
"id": "dev5",
"port": "in1"
},
"from": {
"id": "dev6",
"port": "c"
},
"name": "c1"
},
{
"to": {
"id": "dev5",
"port": "in2"
},
"from": {
"id": "dev7",
"port": "c"
},
"name": "c2"
},
{
"to": {
"id": "dev7",
"port": "a"
},
"from": {
"id": "dev6",
"port": "o"
},
"name": "t"
}
]Subcircuits
{
"halfadder": {
"devices": {
"dev0": {
"type": "Input",
"label": "a",
"net": "a",
"order": 0,
"bits": 1
},
"dev1": {
"type": "Input",
"label": "b",
"net": "b",
"order": 1,
"bits": 1
},
"dev2": {
"type": "Output",
"label": "o",
"net": "o",
"order": 2,
"bits": 1
},
"dev3": {
"type": "Output",
"label": "c",
"net": "c",
"order": 3,
"bits": 1
},
"dev4": {
"label": "$and$tests/fulladder.sv:10$2",
"type": "And",
"bits": 1
},
"dev5": {
"label": "$xor$tests/fulladder.sv:9$1",
"type": "Xor",
"bits": 1
}
},
"connectors": [
{
"to": {
"id": "dev4",
"port": "in1"
},
"from": {
"id": "dev0",
"port": "out"
},
"name": "a"
},
{
"to": {
"id": "dev5",
"port": "in1"
},
"from": {
"id": "dev0",
"port": "out"
},
"name": "a"
},
{
"to": {
"id": "dev4",
"port": "in2"
},
"from": {
"id": "dev1",
"port": "out"
},
"name": "b"
},
{
"to": {
"id": "dev5",
"port": "in2"
},
"from": {
"id": "dev1",
"port": "out"
},
"name": "b"
},
{
"to": {
"id": "dev2",
"port": "in"
},
"from": {
"id": "dev5",
"port": "out"
},
"name": "o"
},
{
"to": {
"id": "dev3",
"port": "in"
},
"from": {
"id": "dev4",
"port": "out"
},
"name": "c"
}
]
}
}