Wang 2200 was an all-in-one minicomputer released by Wang Laboratories in May 1973. It was one of the first desktop computers designed for data processing using a common computer language, and it found wide use in small and medium-size businesses worldwide.
Overview
The Wang 2200 was an integrated system that included a cathode-ray tube (CRT) display, a keyboard, and a computer-controlled cassette tape storage unit in a single cabinet. It was microcoded to run the BASIC programming language on startup, making it conceptually similar to the home computers that would appear several years later. Approximately 65,000 systems were shipped over its lifetime.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | Wang Laboratories |
| Type | Minicomputer |
| Release date | May 1973 |
| Introductory price | US$7,400 (equivalent to ~$53,700 in 2025) |
| Operating system | Wang MOS (OS), BASIC |
| CPU | Transistor–transistor logic (TTL) |
| Memory | 4 KB RAM (expandable in 4 KB increments up to 32 KB); MOS in 4 KB ROM; BASIC in 16 KB ROM |
| Storage | Integrated cassette tape unit |
| Display | 16 lines × 64 characters, CRT |
| Input | Keyboard |
Models and Evolution
Early Models (2200A, B, C)
The first models released in April 1973 were the 2200A and 2200B. The B model included additional microcode commands in Wang BASIC, particularly for data handling and database construction. The later C model added error handling capabilities.
S and T Models
These replaced the A, B, and C series with a re-implemented CPU using higher-density large-scale integration (LSI) components. The S model added string conversion commands, while the T model introduced a complete set of matrix math commands and enhanced input/output functions. The S and T machines also featured an internal power supply instead of the external unit used in earlier models.
E and F Models
These offered features similar to the S and T models but housed the system in a terminal-style case with a redesigned input/output subsystem, making I/O cards incompatible with earlier machines.
VP and MVP Series (1976 onward)
A complete CPU redesign was introduced at the September 1976 Westcon show and shipped in 1977 as the 2200VP. It ran BASIC-2, which supported both filename-based disk access ("Automatic File Cataloging") and "Absolute Sector Addressing" for custom databases. Up to 16 files could be open simultaneously. The 2200MVP was a multi-user upgrade supporting high-speed printers, IBM diskette and 9-track magnetic tape compatibility, telecommunications, and special instrument controllers.
Micro VP
In the early 1980s, the VP series was replaced by a single-chip VLSI implementation called the "Micro VP," otherwise similar to earlier versions.
386-Based Models (1989–1991)
The final models of the 2200 series were introduced in July 1989 as the 2200 CS/386, using a 16 MHz Intel 80386 CPU that implemented the 2200 microcode on top. The entire machine fit on a single plug-in card. BASIC was implemented in 256 KB of static RAM loaded from disk and used an incremental compiler rather than an interpreter. In March 1991, the CS/386 Turbo replaced it, running at 32 MHz.
Multi-User Capabilities
The 2200 series evolved from a singular desktop computer into larger systems capable of supporting up to 16 workstations. These utilized commercial disk technologies that appeared in the late 1970s and early 1980s. The disk subsystems could be attached to up to 15 computers, giving a theoretical upper limit of 240 workstations in a single cluster.
Soviet Clone: Iskra-226
In the 1970s, Wang 2200 computers were extensively used by Gosplan and Goskomstat, the main Soviet planning and statistical agencies. Fearing backdoors in Western hardware, Soviet engineers reverse-engineered the system and developed the Iskra-226, a 100% binary-compatible clone. Development began in 1978, and series production started in 1980. While software-compatible with Wang's T-Basic code, the Iskra-226 had a completely different internal structure and included features suited for industrial control, such as twin high-speed RS-232 interfaces, an IEEE-488 equipment control interface, and CAMAC crate control circuitry.
End of Production
Overshadowed by the Wang VS product line, the 2200 continued as a cost-effective solution for existing customers. In the late 1980s, Wang offered the 2200 CS with bundled maintenance at a lower cost than customers were paying for maintenance of their aging systems. Most customers upgraded, and Wang never developed any new 2200-series products thereafter. As of 1997, Wang reported approximately two hundred 2200 systems still under maintenance worldwide.
Legacy
Wang 2200 BASIC-2 code can still run on PCs and Unix systems using compilers and runtime libraries sold by Niakwa, allowing access to modern RAM and disk space while running many times faster than on the original hardware.
