Burroughs B20

The B20 was a line of microcomputers from Burroughs Corporation. The systems, introduced in May 1982, consist of two models: the B21 and the B22.[1] The B21 models were rebadged Convergent Technologies AWS workstations incorporating an Intel 8086 CPU. The B22 models were rebadged IWS workstations. They ran the BTOS operating system, which was a version of Convergent's CTOS, as well as CP/M and MS-DOS.[2]

Burroughs B20
A Burroughs B25 computer running BTOS
DeveloperConvergent Technologies
Type16-bit professional
Release dateMay 1982 (May 1982)
Operating systemBTOS
CPUIntel 8086
Memory640K
DisplayCRT

Systems supported up to 640 KB of RAM. The B22 included a mass storage unit with a capacity of up to 60 MB.[2]

The Burroughs B25, a rebadged Convergent NGEN system with an Intel 80186 CPU, was introduced in 1983.[3] The B26 was introduced in 1984, and a B28 system followed in 1985 based on the Intel 80286 CPU. There was also an 80186-based B27 which used an "F-bus" rather than the "X-bus" used on the B25/B26/B28. A cluster only (no storage) 80186-based B24 was later released and commonly used by bank tellers.

References
  1. "Burroughs B22". Rhode Island Computer Museum. Retrieved Jan 10, 2020.
  2. "(advertisement)". Computerworld. March 28, 1983. Retrieved Jan 10, 2020.
  3. "Convergent Technologies AWS NGEN Workstation". Centre for Computing History. Retrieved Jan 10, 2020.
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