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Ohio Scientific

Ohio Scientific Inc. (also known as Ohio Scientific Instruments) was a United States computer company that built and marketed computers from the late 1970s to the early 1980s. The company was founded by Mike and Charity Cheiky in 1975 in Hiram, Ohio.

One of their first products, launched in 1978 was the OSI Model 500 system, a very simple single board computer based on the MOS Technology 6502 microprocessor, but lacking a Video Display Controller. It needed an external video terminal such as the VT100, or the CT-64 terminal system from SWTPC, to create a useful system. Their later products were also 6502-based, the Superboard II, Challenger 1P, Challenger 4P and Challenger 8P, introduced in 1979 and discontinued in 1981.

Original Ohio Scientific motherboard designs used 7400-series transistor-transistor logic TTL chips. Instead of using a floppy disk controller IC, they used the Motorola 6850 ACIA serial-port UART chip, which made their 8 and 5 inch floppies unreadable on any other system.

Timeline for Ohio Scientific :

Date Event
Jul 1980 News Article : NCC Anaheim report
Oct 1980 News Article : Monitor EPROM produced for Ohio micros
Feb 1981 News Article : Ohio base in England


Hardware Products

Challenger 1P Computer

Challenger 1P Computer
1978
The C1P series marked Ohio Scientific's 1978 formal entry into the low-cost, mass-marketed personal computer marketplace.

Manufacturer : Ohio Scientific
Type : Computer

Ohio Superboard II Model 610

Ohio Superboard II Model 610
October 1978
The Ohio Scientific Superboard II was one of the first successful single-board micros.

Manufacturer : Ohio Scientific
Type : Computer

Ohio Superboard II Model 610 (Wooden Case)

Ohio Superboard II Model 610 (Wooden Case)
October 1980
The Ohio Scientific Superboard II was one of the first successful single-board micros.

Manufacturer : Ohio Scientific
Type : Computer


Software Products

SCX-102 C1P Sampler

SCX-102 C1P Sampler
1979
Six Programs...

Manufacturer : Ohio Scientific Inc.
Type : Software


Magazine Articles About Ohio Scientific

 

Ohio Scientific

 

 

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