| Year of introduction | 1989 |
| Function | Clock calculations |
| Model Number | |
| Power | 2 LR44 watch batteries |
| Original Price | |
| Photo credit | Mark Bollman→ |
Time Master
| Year of introduction | 1989 |
| Function | Clock calculations |
| Model Number | |
| Power | 2 LR44 watch batteries |
| Original Price | |
| Photo credit | Mark Bollman→ |
The Time Master was CI's first calculator with preprogrammed functions for clock calculations. It can convert between 12- and 24-hour clocks, perform arithmetic on clock values, and do elementary payroll calculations. Additionally, a timer with a lap function is built in.
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