Manufacturers
These are some of the manufacturers which made a notable contribution to calculator development:
- APF - U.S.A.
- Aurora - China
- Bell Punch Company / ANITA - UK.
- Bowmar - U.S.A.
- Brunsviga - Germany
- Burroughs - U.S.A.
- Busicom - Japan.
- Canon - Japan
- Casio - Japan
- Commodore / CBM - Canada/U.S.A.
- Comptometer / Felt & Tarrant - U.S.A.
- Compucorp - U.S.A.
- Digitz - China
- Elektronika - U.S.S.R.
- Facit - Sweden.
- Felt & Tarrant - U.S.A.
- Friden - U.S.A.
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- General Instrument - U.S.A.
- Hewlett Packard - U.S.A.
- Hitachi - Japan.
- IME - Italy.
- Litronix - U.S.A.
- Lloyd's - U.S.A.
- Marchant - U.S.A.
- Monroe - U.S.A.
- National Semiconductor - U.S.A.
- Nippon Calculating Machine / NCM - Japan.
- Novus - U.S.A.
- Odhner - Russia and Sweden.
- Olivetti - Italy.
- Rapid Data - Canada.
- Rockwell - U.S.A.
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- Sanyo - Japan.
- Sharp - Japan.
- Sinclair - UK.
- Singer-Friden - U.S.A.
- Sumlock Anita - UK.
- Summit - U.S.A.
- Teal - Japan and U.S.A.
- Texas Instruments - U.S.A.
- Toshiba - Japan.
- Unicom - U.S.A.
- Victor - U.S.A.
- Wang - U.S.A.
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