Cromemco

Cromemco. Cromemco was a pioneering American microcomputer company founded in 1974 by Harry Garland and Roger Melen, initially as a supplier of digital electronics kits for hobbyists. The company rapidly evolved into a leading manufacturer of high-performance, industrial-grade S-100 bus computer systems based on the Zilog Z80 microprocessor, distinguishing itself with robust hardware and innovative software. Cromemco's machines were widely adopted in scientific, industrial, and business applications, and the company played a significant role in the early microcomputer industry before its acquisition in 1987.

History

Cromemco was established in 1974 by Stanford University graduate students Harry Garland and Roger Melen, who had previously gained recognition for their digital camera project, the Cromemco Cyclops, featured in Popular Electronics magazine. The company's name was derived from their Stanford dormitory, Crothers Memorial Hall. Initially operating from a garage in Mountain View, California, within the heart of the emerging Silicon Valley technology scene, the firm first sold interface kits for the Altair 8800. As the microcomputer revolution accelerated, Cromemco transitioned to manufacturing complete computer systems, becoming a major player in the competitive S-100 bus market alongside rivals like IMSAI and Processor Technology. The company experienced substantial growth throughout the late 1970s and early 1980s, supplying systems to prestigious clients including the United States Army, Boeing, and MIT. Changing market dynamics, the rise of the IBM Personal Computer, and the decline of the S-100 bus standard led to financial difficulties, culminating in Cromemco's acquisition by Dynatem in 1987.

Products

Cromemco's product line centered on modular, expandable systems built around the S-100 bus and the Zilog Z80 central processing unit. Its first commercial computer was the Cromemco Z-1, introduced in 1976. This was followed by a series of influential machines such as the Cromemco Z-2, the Cromemco System Three, and the high-end Cromemco System Four. The company also produced a range of specialized boards, including the Cromemco Dazzler, one of the first color graphics cards for microcomputers, and the Cromemco TU-ART dual serial port and parallel port interface. Other notable hardware included memory boards, analog-to-digital converters, and disk controllers for hard drives and 8-inch floppy disk drives. Cromemco bundled its systems with the Cromix operating system, a multi-user, multi-tasking Unix-like environment, and offered programming languages like Cromemco FORTRAN IV and Cromemco COBOL.

Technology and innovations

Cromemco was renowned for its engineering excellence and several key technological innovations. The company was an early proponent of using the Zilog Z80 processor, which offered advantages over the competing Intel 8080. Its S-100 bus implementations were noted for their reliability and speed, often exceeding the specifications of the original Altair 8800 bus. A major innovation was the Cromemco Dazzler, which provided color graphics capabilities far ahead of most contemporary microcomputers and found use in early video games and simulations. The development of the Cromix operating system, derived from Unix Version 6 and Unix Version 7, was a significant achievement, bringing powerful multi-user features to the Zilog Z80 platform. Cromemco also pioneered the use of bank switching memory management in its later systems, such as the Cromemco Z-2H, to support large programs and data sets beyond the Zilog Z80's 64-kilobyte address limit.

Impact and legacy

Cromemco had a substantial impact on the early microcomputer industry, particularly in moving computing beyond the hobbyist market into professional, scientific, and industrial realms. Its robust, reliable systems were used for applications ranging from laboratory automation and industrial process control to business data processing and even early computer-generated imagery. The company's support for the Cromix operating system and high-level languages like FORTRAN and COBOL made its machines viable alternatives to more expensive minicomputers from companies like Digital Equipment Corporation. While Cromemco did not survive the industry consolidation of the mid-1980s, its legacy endures among historians of computing and vintage computer enthusiasts. The company's emphasis on solid engineering, expandable architecture, and professional software environments influenced later system designs and remains a noted chapter in the history of Silicon Valley and the microcomputer revolution.

Category:Computer companies of the United States Category:Defunct computer companies Category:Companies based in Santa Clara County, California Category:Microcomputer manufacturers