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Calculators Manufacturers Database
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Manufacturers
|
Type |
Years |
Models |
Origin |
Production |
Picture |
Info |
| O | |||||||
Ocean Same as Royal | S | 70's | 1 | - | JAP |
 | - |
OEC (Office Environement Co-operatives) | D | 80's | 1 | - | JAP |
 | - |
Office international Same as Type C | EL | 1975 - 1976 | 3 |  | JAP |
 | - |
Ofrex Same as Abatronic, Abbott, Bayard, Brother, Hanimex, Ibico, Liebherr, Logabax, Realmate, Studio, SVM, Trical | EL, D | 80's | 2 |  | JAP |
 | - |
Oi-Electric | D | 1963 | 1 |  | JAP |
 | - |
Okhai Same as Memory Master, Superlectron | EL, D | 70's | 1 | | HON |
 |
 |
Olimpus Same as Unisonic, Luxury, Nelsonic, Diamond, Wilshire, Logitech | EL | 80's | 1 | - | HON |
 | - |
Olivetti | EL, D, PC | 1965 - act. | 116 |  | ITA, JAP, BRA, HON, CHI |
 |
|
Olson | EL | 1973 | 1 | - | - | - | - |
Olympia By Casio, Matsushita Same as Type 1, Type 4, Type 5, Type F, Abatron, Alfa, Calcutron, Clever, Kennex, MBO, M-Office, Panasonic, Philips, Technico, Vastwood, Welco | EL, D, PC | 1958 - 1997 | 287 |  | JAP, TWN, KOR, SIN, HON |
 |
|
Olympus | S | 80's | 1 | | JAP |
 | - |
Omal (-> Contex) | - | 70's | - | - | - | - | - |
Omega | ? | - | 3 | - | - | - | - |
OMNI By Personal Electronics Same as MBO, Megasonic, Nentime, Tiqua, Zeon | W | 80's | 3 |  | HON |
 | - |
Omnitech Same as Clover, Digitech, Elco, Sears, Technico | D | 80's | 1 | - | TWN |
 | - |
Omron Same as Citizen | EL | 1969 - 1977 | 128 | | JAP |
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Ongnica Same as Type 1, Type 2 | EL | 1976 - 1978 | 4 | - | HON |
 | - |
Opel | D | 80's | 1 | | JAP |
 | - |
Operator Same as Type 3 | D | 1972 | 1 | - | JAP |
 | - |
Oppex | EL | 80's - 90's | 2 |  | TWN |
 | - |
Optel | W | - | 1 | | USA |
 | - |
Optimec | EL | 80's ? | 1 | - | - |
 | - |
Orator | D | 80's | 1 |  | - | - | - |
Orbex Same as Pythagoras, Hornet, Privileg, Meridia | EL | 1975 | 1 | - | TWN |
 | - |
Orbit By TEAL Same as Prinztronic, IMA, GPM, Privileg, Systema, Lloyds, Tecnosonic, Yorx | EL | 1975 - 1978 | 4 | - | JAP |
 | - |
Ordibel Collators | EL | 1973 | 1 | | - | - | - |
Orgtechnika (-> Elka) | - | 1981 | - | - | - | - | - |
Orient | EL, W | 1978 - 80's | 2 | | JAP |
 | - |
Orient (W) | W | 80's | 1 | | JAP |
 | - |
Orintex | S, W | 80's | 3 | - | HON |
 | - |
Orion | EL | 70's | 1 | - | - |
 | - |
Oris Same as Type 3 | EL | 1973 | 1 | | JAP |
 | - |
Osaka Same as Easymade, Calcomate, Trainwell, Sharp clone | EL | 1985 | 2 | - | - |
 | - |
Otron | S | 1979 | 1 | - | - |
 | - |
(c) epocalc 2016