Otrona

Otrona Advanced Systems Corporation
Company type	Private
Industry	Computer hardware
Founded	1981
Founder	Ron Lingeman
Defunct	1984
Headquarters	United States
Key people	Ron Lingeman (founder)
Products	Portable business computers (Otrona Attaché, Otrona 8:16, Otrona 2001)
Number of employees	175 (1984)

Otrona Advanced Systems Corporation was an early Colorado-based producer specializing in portable business computers compatible with CP/M and MS-DOS operating systems.

Otrona Attaché and 8:16

Introduced in April 1982, the company's flagship product, the Otrona Attaché, was a compact, portable computer roughly the size of a thick briefcase, featuring a distinctive off-white casing accented with orange trim. Its innovative design incorporated a foldable chassis and a detachable keyboard, complemented by a 5-inch monochrome CRT display and dual 360Kb 5.25-inch floppy drives.

Equipped with a Zilog Z80A processor running at 4 MHz, the Attaché operated on CP/M version 2 with an initial 64K RAM, expandable up to 640K. An optional Intel 8086 expansion card allowed it to run a customized version of MS-DOS. The system included ROM-based utility programs called Valet—desk accessories such as a calendar and calculator—that enabled multitasking without closing current applications, predating similar multitasking features introduced by the Macintosh in 1984.

Conceptualized by founder Ron Lingeman, formerly of Hewlett-Packard, the Attaché was notably smaller, lighter, and faster than contemporaries like the Osborne 1. Unlike fully IBM-compatible competitors such as Kaypro, the Attaché offered advanced functionality at a premium price point but did not provide complete IBM compatibility. It operated primarily on AC power with an optional external battery pack.

The 1983 "8:16" model incorporated the 8086 coprocessor as a standard feature, improving its MS-DOS capabilities. Although it remained only partially compatible with IBM PCs, it supported essential business applications like Lotus 1-2-3, targeting professionals who required portability without sacrificing productivity.

Otrona 2001

In May 1984, Otrona released the "2001," an IBM PC-compatible portable computer powered by an Intel 8088 processor. Designed to be a lighter and more technologically advanced alternative to IBM and Compaq luggables, the 2001 utilized a PC BIOS created by Steve Gray. It featured a hinged, pivoting larger CRT display with twice the resolution of typical PCs at that time while maintaining portability. Optional enhancements included a hard disk drive and a Z80A CPU card for CP/M software compatibility. This model offered significantly improved PC compatibility and delivered performance exceeding standard PCs by more than double.

Retailing at $3,995, the production expenses for the 2001 surpassed initial estimates, which constrained its commercial success. Despite its forward-thinking design and superior speed, it was unable to halt Otrona's financial downturn. The company experienced revenue shortfalls due to slow market acceptance of PC standards and underwhelming sales of both the 8:16 and 2001 models. Efforts to secure additional financing from banks and venture capital sources failed, resulting in severe cash flow problems that prevented procurement of components or meeting sales targets required for credit access. Otrona's delayed adaptation to the dominance of the IBM PC ultimately hindered its growth prospects.

Bankruptcy

After operating for seven years, Otrona discontinued manufacturing in September 1984 and laid off all 175 employees immediately. Initially filing for Chapter 11 bankruptcy protection to explore restructuring options, the company soon converted to Chapter 7 bankruptcy proceedings that led to liquidation of assets.

Approximately 5,000 units of the Attaché were sold and have since become sought-after collector’s items. The 2001 model had limited market penetration and is now regarded as one of the rarest early IBM PC clones.

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