The numeric keys 0 to 9 produce the corresponding binary codes.
| Key | Decimal | 32 | 16 | 8 | 4 | 2 | 1 |
|---|---|---|---|---|---|---|---|
| Decimal Point | 10 | 0 | 0 | 1 | 0 | 1 | 0 |
| Change Sign | 11 | 0 | 0 | 1 | 0 | 1 | 1 |
| Kbd Clear | 12 | 0 | 0 | 1 | 1 | 0 | 0 |
| Reg Clear | 13 | 0 | 0 | 1 | 1 | 0 | 1 |
| Divide | 16 | 0 | 1 | 0 | 0 | 0 | 0 |
| Add | 18 | 0 | 1 | 0 | 0 | 1 | 0 |
| Subtract | 19 | 0 | 1 | 0 | 0 | 1 | 1 |
| Multiply | 20 | 0 | 1 | 0 | 1 | 0 | 0 |
| P | 21 | 0 | 1 | 0 | 1 | 0 | 1 |
| R | 24 | 0 | 1 | 1 | 0 | 0 | 0 |
| Enter | 25 | 0 | 1 | 1 | 0 | 0 | 1 |
| Sub-total | 26 | 0 | 1 | 1 | 0 | 1 | 0 |
| Total | 27 | 0 | 1 | 1 | 0 | 1 | 1 |
| Div/Const | 48 | 1 | 1 | 0 | 0 | 0 | 0 |
| Mult/Const | 52 | 1 | 1 | 0 | 1 | 0 | 0 |
| P/Const | 53 | 1 | 1 | 0 | 1 | 0 | 1 |
| Enter/Const | 57 | 1 | 1 | 1 | 0 | 0 | 1 |