Key Variables
| Variable Name | Description |
| N | size of system matrices (N x N) |
| NEL | number of elments |
| NOUT | number of outputs specified |
| NIN | number in inputs specified |
| NODES | number of nodes (does not count ground node) |
| NORDR | order of the linear system |
The internal data structures of CCICAP include the following:
| Element Code (j) | Element Name | Number of Nodes | Element Description |
| 1 | G | 2 | Conductance |
| 2 | C | 2 | Capacitance |
| 3 | VCC | 4 | Voltage to Current Converter |
| 4 | CCC | 4 | Current to Current Converter |
| 5 | VVC | 4 | Voltage to Voltage Converter |
| 6 | I | 2 | Current Source |
| 7 | V | 2 | Voltage Source |
| 8 | IOA | 4 | Ideal Op-Amp |
| 9 | L | 2 | Inductance |
| 10 | R | 2 | Resistor |
| 11 | K | 0 | Inductive Coupling |
| 12 | CVC | 4 | Current to Voltage Converter |
| 13 | AM | 2 | Ammeter |
| 14 | VM | 2 | Voltmeter |
| 15 | BJT | 3 | Bipolar Junction Transistor |
| 16 | FET | 3 | Field Effect Transistor |
| 17 | OA | 3 | Operational Amplifier |
| 18 | IN | 1 | Digital Input Node |
| 19 | OUT | 1 | Digital Output Node |
| 20 | MUL | 2 | Digital Multiplier |
| 21 | DEL | 2 | Digital Delay Element |
| Variable | Value | Description |
| IM1(j, 5) | 0 | for G, C, VCC, I, R, VM, FET, K, IN, OUT, MUL, DEL |
| 1 | CCC, VVC, V, IOA, L, AM, BJT | |
| 2 | CVC, OA | |
| IM1(j, 2) | 1 | Valid sensitivity request elements. |
| IT1(j, 2) | 1 | analog elements |
| 0 | digital elements | |
| IT1(j, 3) | 1 | source elements |
| 0 | non-source elements | |
| IT1(j, 4) | 1 | outputs |
| 0 | non-outputs | |
| IT1(j, 5) | 1 | C, L, DEL |
| 2 | G, VCC, CCC, VVC, CVC, R, K, MUL | |
| 3 | I, V, IN | |
| 4 | AM, VM | |
| 5 | BJT, FET, OA | |
| 6 | IOA | |
| IT1(j, 6) | number of nodes for element type j | |
| IT1G(k, j) | pointer to setup NEMT(6-9, i) for element type j |
| Variable Name | Description |
| NEMT(1, i) | Element Code for element i |
| NEMT(2-5, i) | Node numbers for element i |
| NEMT(6, i) | model number (temp) for element i |
| NEMT(6-9, i) | coordinates for entry of value to G or C matrix |
| EL_NAME(i) | Name of element i |
| NAMES(.) | Node Names |