![A Casio ST-1 hand held calculator with timer and stopwatch functions. Dates from 1977 Stock Photo - Alamy A Casio ST-1 hand held calculator with timer and stopwatch functions. Dates from 1977 Stock Photo - Alamy](https://c8.alamy.com/comp/2HRJBGJ/a-casio-st-1-hand-held-calculator-with-timer-and-stopwatch-functions-dates-from-1977-2HRJBGJ.jpg)
A Casio ST-1 hand held calculator with timer and stopwatch functions. Dates from 1977 Stock Photo - Alamy
![Saturday watch design again, but this time I present the first digital stopwatch timepiece ever created: the Casio ST-1! This curious machine from the end of the 70s looked like a futuristic Saturday watch design again, but this time I present the first digital stopwatch timepiece ever created: the Casio ST-1! This curious machine from the end of the 70s looked like a futuristic](https://i.redd.it/vmvgjxd0s2r71.jpg)
Saturday watch design again, but this time I present the first digital stopwatch timepiece ever created: the Casio ST-1! This curious machine from the end of the 70s looked like a futuristic
![Casio - ST-1 - - Vintage calculator - Casio ST1 - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA Casio - ST-1 - - Vintage calculator - Casio ST1 - Casio.ledudu.com - Casio pocket computer, calculator, game and watch library. - RETRO CALCULATOR FX PB SF LC SL HP FA](https://casio.ledudu.com/images/calculs/casio/machines/zoom/st1.jpg)