| 3 | C1 | Activates the C section of the units display. |
| 4 | B1 | Activates the B section of the units display. |
| 5 | A1 | Activates the A section of the units display. |
| 6 | F1 | Activates the F section of the units display. |
| 7 | Gi | Activates the G section of the units display. |
| 8 | E1 | Activates the E section of the units display. |
| g | D2 | Activates the D section of the tens display. |
| 1 0 | C2 | Activates the C section of the tens display. |
| 1 1 | B2 | Activates the B section of the tens display. |
| 1 2 | A2 | Activates the A section of the tens display. |
| 1 3 | F2 | Activates the F section of the tens display. |
| 14 | E2 | Activates the E section of the tens display. |
| 1 5 | D3 | Activates the D section of the hundreds display. |
| 1 6 | B3 | Activates the B section of the hundreds display. |
| 1 7 | F3 | Activates the F section of the hundreds display. |
| 1 8 | E3 | Activates the E section of the hundreds display. |
| 19 | AB4 | Activates both halves of the l in the thousands display. |
| 20 | POL | Activates the negative polarity display. |
| 21 | BP | Backplane drive output. |
| 22 | G3 | Activates the G section of the hundreds display. |
| 23 | A3 | Activates the A section of the hundreds display. |
| 24 | C3 | Activates the C section of the hundreds display. |
| 25 | G2 | Activates the G section of the tens display. |
| 26 | V- | Negative power supply voltage. |
| 27 | VINT | Integrator output, connection for CINT. |
| 28 | VBUFF | Buffer output, connection for RINT. |
| 29 | CAZ | Integrator input, connection for CAZ. |
| | |