# MC3021¶

MC3021 is an IC that outputs a high if and only if the first two inputs are the same. As of alpha 3: any two inputs are accepted. If three are given, the last (input 3) is ignored. If only one is given, IC retains state.

Equivalent Perlstone script: AB^!r

A B Output
0 0 1
1 0 0
0 1 0
1 1 1

1. XNOR
2. [MC3021]
3. Blank
4. Blank

## IC Pins¶

### Inputs¶

• The XNOR Operand

### Outputs¶

• Outputs high if all or no inputs are high

## Permissions¶

Node Description Default Role
craftbook.ic.safe.mc3021 Allows creation of the Xnor Gate (MC3021) IC. user