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Nixdorf Computer

Nixdorf Computer AG was a leading West German computer company founded by engineer Heinz Nixdorf in 1952 as Labor für Impulstechnik in , initially focusing on electronic arithmetic and logic units for systems before evolving into a major producer of programmable computers and decentralized solutions for small and medium-sized enterprises. Relocating its headquarters to in 1968 after acquiring Wanderer-Werke, the company renamed itself Nixdorf Computer AG and expanded rapidly, achieving 23,000 employees, seven production sites worldwide, and annual international sales of DM 4 billion by 1985, establishing itself as Germany's second-largest and Europe's fourth-largest computer firm. The firm pioneered innovations in and banking technology but faced a crisis after Nixdorf's death in 1986, leading to its acquisition by AG in 1990 and merger into Informationssysteme AG. Early products included vacuum tube-based balancers and multipliers for manufacturers like Wanderer-Werke and , transitioning to transistorized systems such as the Gamma 172 in 1960. A breakthrough came in 1964 with the Nixdorf 820, a freely programmable small computer designed for business applications, featuring , integrated keyboards, and peripherals like printers and data transfer modules. By the 1970s, Nixdorf advanced into disk-based systems like the 8870 with multi-terminal support and the software suite, which adapted to over 180 markets and sold more than 100,000 licenses, solidifying its role as a leading European software house. Nixdorf's focus on and niche markets, particularly banking, drove its international growth; notable deployments included a 1974 network of 1,100 terminals for Scandinaviska Enskilda Bank in and later automated teller machines, point-of-sale terminals like the 8812, and ISDN-compliant digital switching systems such as the DVS 8818 in 1981. In the , the company challenged American dominance in through agile desktop systems and computerized banking equipment, dominating the West German market while establishing subsidiaries in the United States, , , and to bolster global revenues. Its legacy endures through the Heinz Nixdorf MuseumsForum in , the world's largest computer museum, housed in the former headquarters.

Early History

Origins in the Labor for Impulstechnik

Following World War II, Heinz Nixdorf, born in 1925 in Paderborn, Germany, completed his Abitur in 1947 and enrolled that year in a degree program in physics and business studies at the University of Frankfurt/Main. He worked as a student trainee at Remington Rand in Frankfurt in 1951, where he gained practical knowledge in electronic computer construction under Dr. Walter Sprick. Abandoning his studies in 1952 without completing the degree, Nixdorf pursued entrepreneurship in the emerging field of data processing electronics. In July 1952, Nixdorf established the Labor für Impulstechnik (LfI) in Essen as a one-man operation specializing in pulse technology for electronic components used in data processing equipment, particularly punched card machines. He secured his first customer, the Rheinisch-Westfälisches Elektrizitätswerk (RWE) electricity company in Essen, which provided a room for operations and an advance of DM 30,000; for RWE, LfI developed its initial electronic calculator using vacuum tubes. Nixdorf hired his first employee, an electronics technician, in September 1952, marking the start of modest expansion. The laboratory's early innovations centered on electronic balancers and multipliers designed to enhance punched card systems by automating arithmetic operations. These devices, produced beginning in 1952 and relying on technology for logic and amplification, were supplied to major firms including Wanderer-Werke in and the company Compagnie des Machines Bull in . A key example was the ES 24 electronic balancer, introduced in series production in 1955, which processed up to 42,000 s per hour and integrated seamlessly with Bull's machines. Deliveries of multiplier units, such as those in the ES/EM series, began ramping up from 1954, solidifying LfI's role as a specialized supplier in the sector. As demand grew, LfI outgrew its facilities, prompting a relocation to in 1959 to accommodate expanded operations and a of 40 employees. During the late 1950s, the laboratory began transitioning from vacuum tube-based designs to technology, which offered greater reliability and compactness for arithmetic units, though early multipliers like the ES/EM series remained tube-dependent. This shift laid the groundwork for more advanced components, positioning LfI as a pioneer in electronic peripherals for electromechanical data systems.

Founding of Nixdorf Computer AG

The business operated as the Labor für Impulstechnik from 1952 until 1968, when, following the acquisition of Wanderer-Werke, it was renamed and incorporated as Nixdorf Computer AG in , . This establishment marked the formal transition from Heinz Nixdorf's earlier work in electronics to a structured enterprise focused on components, building on the roots in the Labor für Impulstechnik to capitalize on the growing demand for reliable electronic devices in post-war 's industrial landscape. Heinz Nixdorf, the founder and majority shareholder, steered the company toward developing electronic desk calculators and peripherals for punched card systems, emphasizing practical applications for business operations. The initial emphasis was on creating compact, efficient tools that could handle and tasks more effectively than mechanical predecessors. This strategic direction reflected Nixdorf's vision for accessible technology tailored to commercial needs rather than large-scale mainframes. An early product line incorporating technology was the Gamma 172 multiplier, launched in to perform operations with greater speed and reliability compared to vacuum tube-based systems. This device represented an early shift toward integration in computing hardware. Complementing the multipliers, punched card peripherals were developed to support data input and , enabling basic for administrative functions. From the outset, the company adopted a centered on small and medium-sized enterprises (SMEs) in , offering affordable solutions for decentralized that bypassed the high costs of centralized mainframe installations. This approach prioritized user-friendly systems that could be deployed in office environments without extensive technical expertise. The strategy proved effective, driving rapid expansion: by 1965, the workforce had grown to 1,000 employees, and annual revenue reached 100 million by 1968, underscoring the company's burgeoning impact on the European computing sector.

Growth and Expansion

Development under Heinz Nixdorf

Under Heinz Nixdorf's leadership, the company pursued a management philosophy centered on , exemplified by the 1968 acquisition of Wanderer-Werke to control manufacturing processes from components to final assembly. This approach was complemented by substantial in-house efforts, fostering innovation in hardware and software tailored to decentralized solutions. Nixdorf emphasized serving small and medium-sized enterprises (SMEs) with affordable, user-friendly systems, building a dedicated force to support these customers in adopting technology. The company expanded internationally by establishing subsidiaries, beginning with Nixdorf Computer Inc. in the United States in 1966, followed by operations in the and other European markets. By 1985, Nixdorf had subsidiaries in 44 countries, reflecting aggressive global outreach that positioned it as a key player beyond . This strategy drove significant export growth, with international contributing substantially to overall by the early . Workforce expansion under Nixdorf was rapid, reaching 23,000 employees by 1985, many based in , which he transformed into a major IT hub through strategic investments. He supported this growth with innovative initiatives, including the establishment of a program at in 1972, enhancing local talent development and company culture. Financially, Nixdorf Computer achieved remarkable success, becoming Europe's fourth-largest computer firm by the , with total sales reaching 4 billion Deutsche Marks in 1985. These accomplishments stemmed from consistent R&D investments, which supported the creation of proprietary technologies such as the NIDOS operating system for its systems.

Key Milestones in the 1960s and 1970s

In 1964, Nixdorf launched the 820 system, marking the company's entry into the small computer market as the first freely programmable system targeted at small and medium-sized enterprises (SMEs). This innovation utilized magnetic core memory for data storage and supported a FORTRAN-like programming language, enabling businesses to perform complex calculations without relying on large mainframes. In 1968, following the acquisition of Wanderer-Werke, the company relocated to and renamed itself Nixdorf Computer AG, solidifying its position in decentralized . Nixdorf's market position strengthened significantly through the decade, achieving 15% of Western Europe's computer market by 1978 alongside strategic partnerships with for integrating technology into its systems. Sales surged from DM 28 million in 1966 to over DM 1 billion by 1978, reflecting explosive growth and global expansion with over 10,000 employees.

Challenges and Transition

Post-Nixdorf Developments

Heinz Nixdorf, the founder and driving force behind the company, died suddenly of a heart attack on March 17, 1986, at the age of 60, while attending the trade fair in Hannover. His unexpected passing marked the end of an era characterized by charismatic, founder-led leadership and prompted an immediate transition to professional management. Klaus Luft, a long-time executive, was appointed as the new chairman of the board, overseeing the shift toward a more structured model while the Nixdorf family retained significant influence through their ownership of approximately 66% of the company's shares. In the immediate aftermath, Nixdorf Computer AG reported strong financial performance for 1986, with revenues reaching 4.5 billion—a 15% increase from the previous year—driven by continued demand in banking and systems. However, underlying strains from rapid overexpansion, fluctuations, and intensifying began to surface, culminating in an operating profit of 331 million in 1987 followed by a 60 million loss on normal operations in 1988. These pressures were exacerbated by a changing mix, with a decline in high-margin banking installations and growth in lower-margin and sectors. Under Luft's leadership, the company launched a turnaround in the late , emphasizing software services, systems integration, and to diversify beyond hardware dependency and adapt to emerging open systems standards. Cost-cutting initiatives were introduced to streamline operations, though major workforce reductions occurred later amid broader market challenges. This refocus on service-oriented models helped stabilize the company temporarily but foreshadowed difficulties in the mainframe sector. The Nixdorf family continued to play a role via the , ensuring alignment with the founder's vision during the transition.

Withdrawal from Mainframe Market

In the late 1980s, Nixdorf Computer AG faced intensifying competition from in the mainframe sector and the rapid rise of vendors, which eroded for and compatible large-scale systems. Product across the depressed hardware prices, forcing Nixdorf to reassess its position in high-cost mainframe development. By 1987, the company had begun emphasizing Unix-based systems like the Targon for commercial applications, signaling an early strategic pivot away from heavy reliance on mainframes toward more open, architectures. The decision to phase out its 370-compatible mainframes culminated in , when Nixdorf announced its withdrawal from the mid-range systems market to concentrate resources on Unix platforms. This involved transferring the 8890 line—Nixdorf's key IBM-compatible mainframe offering—to Comparex Informationssysteme , with Nixdorf handling initial orders while Comparex assumed delivery, support, and further development responsibilities. The move was driven by escalating R&D costs required to maintain parallel development for both IBM-compatible (370) and Unix architectures, which strained the company's finances amid slowing mainframe demand. Customers expressed frustration over halted software updates, such as the next release of Nidos/VSE, and poor communication, reflecting broader morale challenges in the transition. Financially, the withdrawal exacted a heavy toll, with profits plummeting 90% to 26 million in 1988 from 264 million the previous year, followed by a first-half 1989 loss of 297 million that worsened in the second half. Overall, Nixdorf reported a net loss equivalent to $641 million for 1989, against a prior profit of $15.8 million, amid a 1.7% drop in turnover to $3,156 million and a 16% decline in order backlog to $2,586 million. R&D spending remained flat at $316 million, underscoring the unsustainability of mainframe investments that consumed a significant portion of the budget—estimated at around 10% of —without matching the pace of U.S. innovations. By reselling IBM-compatible systems through partners like Comparex, Nixdorf shifted toward a service-oriented model, with services and support growing as a key driver in banking and sectors. The full market exit from proprietary mainframe production was achieved by 1990, enabling refocus on these higher-margin areas.

Merger and Legacy

Takeover by Siemens

In late 1989, Nixdorf Computer AG entered negotiations with AG amid escalating financial pressures, including projected losses of nearly 1 billion for the year due to competitive challenges in the computer market. The talks were driven by Nixdorf's need for a strategic partner to stabilize its operations following years of declining performance after the of founder Nixdorf in 1986. In January 1990, agreed to acquire an initial 51% stake in Nixdorf's common stock from the Nixdorf family and two family-controlled trust funds, valued at approximately 1 billion . This acquisition wrested control from the family, which had held a dominant position, and was subject to approval by West German antitrust authorities. By July 1990, Siemens expanded its ownership through the issuance of 26.3 million new shares to the company, increasing its stake to 78% of the total equity and 91% of the voting rights. The full merger was completed on , 1990, combining Nixdorf Computer AG with Siemens's Data and Information Systems division to form Informationssysteme AG (), headquartered in , . This integration brought together around 60,000 employees from both entities, creating one of Europe's largest companies with projected annual sales of 13 billion . The Nixdorf family retained a minority stake in SNI, preserving some influence.

Formation of Successor Companies

Following the 1990 merger that formed Informationssysteme (), the company's operations underwent significant restructuring in the late 1990s. In October 1999, Limited and AG established a by selling SNI's computer systems division to , creating (Holding) B.V. as a major European IT provider. This entity focused on servers, workstations, and IT services, continuing legacy Nixdorf technologies such as mainframe systems. In April 2009, acquired ' remaining stake, converting into a wholly owned renamed , which later integrated fully into 's global operations. Parallel to this, SNI's retail and banking systems division was spun off in 1999 as an independent entity initially named , specializing in automated teller machines (ATMs), point-of-sale (POS) systems, and related software for financial and retail sectors. On May 5, 2004, the company converted into a stock corporation and went public via an (IPO) on the as , raising approximately €320 million and marking a key step toward autonomy from . This preserved Nixdorf's strong heritage in and automation, serving over 100 countries. In 2016, Wincor Nixdorf was acquired by U.S.-based , in a $1.8 billion deal completed on August 15, forming as a global leader in banking and retail technology. The merger combined Diebold's North American expertise with Wincor Nixdorf's European software strengths, enhancing offerings in secure transaction solutions. By 2024, reported annual revenue of $3.75 billion, underscoring its scale in the sector with a focus on hardware, software, and services for over 90,000 worldwide. In Q3 2025, reported revenue growth of 2% year-over-year and its fourth consecutive quarter of positive . The company is advancing its portfolio with AI-powered solutions, including and hyper-personalized customer services to improve uptime and . Other Nixdorf legacies persisted through , particularly in mainframe systems supporting BS2000/OSD, a mainframe operating system originating from systems; Fujitsu continues to provide hardware and support for these, with sales planned to end in 2030 and maintenance until 2035. Legacy software maintenance for Nixdorf-era applications, such as banking transaction systems, is handled by specialized firms including Diebold Nixdorf's own support services and third-party providers offering extended warranties and migrations. Nixdorf's cultural and historical impact endures through the Heinz Nixdorf MuseumsForum in , , established in 1996 as the world's largest computer museum, preserving over 2,000 exhibits on computing history including Nixdorf's innovations in decentralized . The facility, spanning 8,300 square meters, hosts interactive exhibits and events, ensuring the company's pioneering role in IT remains accessible to the public.

Products and Innovations

Early Calculating Devices

Nixdorf's entry into calculating devices began in 1952 with the production of electronic components for systems, including the (Elektronensaldierer) and (Elektronenmultiplikator) series of balancers and multipliers. These devices utilized relays, vacuum tubes, and early transistors to perform operations, with capacities supporting up to 10-digit multiplications for and tasks. The 24 balancer, introduced in 1955, connected to machines from manufacturers like and processed up to 42,000 cards per hour, significantly speeding up balancing operations in . By the late 1950s, Nixdorf had refined these components, with the EM 22 multiplier completed in 1957 and later transistorized as the Gamma 172 in 1960, enabling faster electronic multiplication integrated into workflows. The Exacta-Continental 6000, an electronic multiplication unit from this period, exemplified the transition to more reliable transistor-based designs and achieved sales of over 2,000 units. These early devices were primarily adopted in and , where they replaced calculations with automated for small and medium-sized enterprises. A key evolution toward programmable devices came with the N 820 in , a calculator-computer tailored for small enterprises. It included 4K words of for program storage and supported punch tape input for data and instructions, allowing users to automate repetitive calculations. Later models in the series incorporated innovations like magnetic drum storage for expanded data retention, further enhancing accessibility and performance while maintaining affordability below 20,000 . The N 820's design emphasized practical business applications, such as and , and saw over 15,000 units sold by the mid-1970s, underscoring its market impact in decentralized .

Minicomputers and Mainframes

Nixdorf Computer entered the market in 1964 with the Nixdorf 820, the company's first freely programmable small computer for business applications, featuring up to 16K words and modular peripherals for tasks like and inventory management. By the late , Nixdorf continued developing affordable, programmable systems tailored for small and medium-sized enterprises (SMEs). These systems supported real-time processing and for process control and business applications. By the mid-1970s, Nixdorf advanced its offerings with the 8870 series, introduced in , a disk-based system designed for distributed processing in commercial settings. This series supported up to 512 KB of main memory and multiple disk drives up to 264 MB, allowing configurations for , order processing, invoicing, and through integrated software like . The NIROS operating system provided compatibility with business-oriented languages such as Business Basic, while enabling real-time data entry via terminals—up to 32 per system—for SMEs transitioning from manual processes. Over 1,500 units of the 8870 were installed worldwide by , underscoring its popularity in sectors like and where turnkey solutions reduced paperwork and improved . Innovations in this era included scalable terminal support and pre-programmed modules customized by dealers for industry-specific needs, promoting decentralized over centralized mainframes. In the 1980s, Nixdorf expanded into mainframes with the 8890 series, announced between 1980 and 1983, positioning itself as a competitor to 's System/370 through plug-compatible designs. The 8890 was a medium-sized mainframe offering batch and online processing, with models ranging from 1 MB to 8 MB of main memory and up to 15 GB; performance scaled to approximately three times the base model, achieving around 1 in compatible configurations. Running NIDOS/VSE—an operating system compatible with 's DOS/VSE—it supported and languages like and , facilitating migration of IBM software for applications in banking and . Key innovations included distributed processing architecture, allowing standalone or networked operation with up to 256 workstations and 32 communication lines, alongside optional vector processing add-ons for enhanced computational tasks; later variants like the 9760 and 9780 extended storage to 256 MB. Approximately 700 units were installed by the mid-1980s, primarily in financial sectors where IBM compatibility ensured seamless integration. Nixdorf's minicomputers and mainframes emphasized enterprise scalability for SMEs, with architectures supporting and for standard business programming and distributed setups that networked terminals for real-time access, reducing reliance on expensive central systems. However, by the late , the rise of personal computers eroded demand for these mid-range systems, leading to financial strain; order backlogs fell 16% in amid flat R&D spending and market shifts. Nixdorf phased out its mainframe production in , selling remnants to Comparex before the 1990 merger with , effectively ending independent development of these lines as focus shifted to open standards and .

Office Automation and PCs

In the 1980s, Nixdorf Computer shifted focus toward distributed office systems, emphasizing workstations that facilitated collaborative work environments for small and medium-sized enterprises (SMEs). The 8890 series, announced in , exemplified this transition by supporting up to 144 display workstations with 24x80 character screens, detachable keyboards, and integrated graphics capabilities through the software suite. These workstations enabled word processing, , and basic document management, connecting seamlessly to system printers operating at 300-1200 lines per minute for efficient output. Configurations like the Model 30, with 1-2 memory and up to 5 disk storage, were tailored for office settings, allowing multiple users to handle text and concurrently. Complementing these were the 600 series distributed processing systems, launched in the early , which targeted small remote offices with low-cost, multi-tasking setups. The 600/35 model supported up to nine terminals and 66 disk storage under the DPEX operating system, enabling local file processing and integration with word processing tools like the 8840 series via software. These systems prioritized energy-efficient designs, with compact processors consuming minimal power for concurrent operations, reflecting Nixdorf's emphasis on practical office deployment. Networking innovations, including support for X.25 protocols through dedicated controllers, allowed connection to wide-area packet-switched networks, facilitating data exchange across distributed office branches. Nixdorf entered the market in the early with PC-compatible models, starting with the PC-02 in 1983, which ran and targeted SMEs with bundled for and . Later iterations, such as 386-based systems in the late like the series precursors, offered enhanced performance with 32-bit processing and up to 16 MB , often packaged with suites to streamline operations. These PCs emphasized reliability for use, integrating with Nixdorf's broader for and remote access. A key strength of Nixdorf's office portfolio lay in banking and technologies, where the company pioneered terminals from the onward. The 8864 banking system, deployed in , connected over 1,100 terminals across bank branches for transactions, evolving by the late to include ATMs and statement printers introduced in 1978. In the 1980s, these advanced to touchscreen-enabled terminals, supporting HASP emulation and protocols for seamless integration with host systems, positioning Nixdorf as a leading vendor alongside NCR and Diebold. Point-of-sale innovations, such as the computerized systems, handled inventory and sales data, laying groundwork for efficient . Nixdorf's contributions to extended to early networking standards, with the 8890 series adopting ECMA OSLAN for local area connections and X.25 for remote , enabling secure, scalable office communications up to 19,200 bps. Energy-efficient features, including low-power terminals and modular designs, reduced operational costs for SMEs, aligning with the era's push for . Post-merger, these original lines ceased, but their legacy persisted in successor firms; by 2025, had evolved them into AI-integrated kiosks and self-checkouts, incorporating for produce and age to enhance efficiency.

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    June 24, 2025. Edeka Beckesepp has integrated self-service checkouts featuring Diebold Nixdorf's AI-powered fresh produce recognition and age verification ...