Various Calculators and Their Stories
World class players
![Abak - antički kalkulator](https://cdn.prod.website-files.com/64ca73a36e15b3d43b1ede7e/64de57d0e48d4e9475155c41_Velike-svjetske-marke.png)
![irene stvarnosti](https://cdn.prod.website-files.com/64ca73a36e15b3d43b1ede7e/64db374e19c92a97dd217809_AR%20ikona%20-%20s.png)
Tradicionalni kineski abacus
![QR kod za AR iskustvo proširene stvarnosti](https://cdn.prod.website-files.com/64d4b697096536cb045e83f2/64da230b62786b295daa9ab5_image.png)
Skeniraj kod mobitelom i uperi kameru u sliku da pokreneš AR.
Although there were numerous pocket calculator manufacturers in the world, most did not survive the 1980s and the intense battle for market share through price reductions.
Additionally, only a small number of manufacturers were able to establish themselves in the market due to quality, low prices, or interesting innovations.
Additionally, only a small number of manufacturers were able to establish themselves in the market due to quality, low prices, or interesting innovations.
![QR kod za AR iskustvo proširene stvarnosti](https://cdn.prod.website-files.com/64d4b697096536cb045e83f2/64da230b62786b295daa9ab5_image.png)
Skeniraj kod mobitelom i uperi kameru u sliku da pokreneš AR.
![Abak - antički kalkulator](https://cdn.prod.website-files.com/64ca73a36e15b3d43b1ede7e/64de57d0e48d4e9475155c41_Velike-svjetske-marke.png)
![irene stvarnosti](https://cdn.prod.website-files.com/64ca73a36e15b3d43b1ede7e/64db374e19c92a97dd217809_AR%20ikona%20-%20s.png)
Tradicionalni kineski abacus
![QR kod za AR iskustvo proširene stvarnosti](https://cdn.prod.website-files.com/64d4b697096536cb045e83f2/64da230b62786b295daa9ab5_image.png)
Skeniraj kod mobitelom i uperi kameru u sliku da pokreneš AR.
![image background](https://cdn.prod.website-files.com/64ca73a36e15b3d43b1ede7e/64ff16f82f581d333f7617eb_Pitagora%202000.png)
![Dashboard mockup](https://cdn.prod.website-files.com/64ca73a36e15b3d43b1ede7e/65004b1df54e66d1db2a94a0_Razni%20kalkulatori.png)
The legendary status was earned by Japanese calculators Brother, Canon, Casio, Sanyo, Sharp, and Toshiba, American manufacturers Commodore, HP, and TI, as well as German brands MBO, Olympia, Privileg, and Triumph-Adler.
Keyboards
![Tipkovnice](https://cdn.prod.website-files.com/64ca73a36e15b3d43b1ede7e/64de58a1c7e80cfdee16e9b4_Tipkovnica.png)
If you look at the keyboard of your mobile phone and the keyboard of the calculator you have on your mobile phone, you will notice that they are completely reversed.
The first row of keys on calculators is 7-8-9, while on phones it is 1-2-3.
The first row of keys on calculators is 7-8-9, while on phones it is 1-2-3.
![Dashboard mockup](https://cdn.prod.website-files.com/64ca73a36e15b3d43b1ede7e/64de58a1c7e80cfdee16e9b4_Tipkovnica.png)
![Dashboard mockup](https://cdn.prod.website-files.com/64ca73a36e15b3d43b1ede7e/6500518ed101e433e2579fe4_Sundstrand%20keyboard%20machine.png)
![](https://cdn.prod.website-files.com/64ca73a36e15b3d43b1ede7e/6500518ed101e433e2579fe4_Sundstrand%20keyboard%20machine.png)
Various variants have been experimented with throughout history, and when David Sundstrand patented the calculator keyboard we know today in 1914, the vast majority of calculator manufacturers accepted it as a rule, regardless of the fact that there is no reason why that layout would be better than the telephone layout.