| Brand: | CASIO | 
| Model: | H-1 | 
| Type: | Calculator | 
| Picture: |   | 
| Batteries: | AA x 3 | 
| Lifetime: | Introduced: 1980 Terminated: unknown | 
| Notes: | The CASIO H-1 is an 8-digit
			calculator with a fluorescent display. It has memory functions and can do
			percentages and has the square root function. The AC key clears everything, including the calculator’s memory. To repeat a calculation, the operator needs to be pressed twice. So to, say, multiply by 2 by 2 multiple times, press 2 × × followed by repeatedly pressing =. It has a slider for fixed point operations. This calculator thinks √-9 = -3. | 
©2025 Ernst Mulder