Burroughs B20

A Burroughs B25 computer running BTOS
Developer	Convergent Technologies
Type	16-bit professional
Released	May 1982; 44 years ago (May 1982)
Operating system	BTOS
CPU	Intel 8086
Memory	640K
Display	CRT

The B20 is 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 are rebadged Convergent Technologies AWS workstations incorporating an Intel 8086 CPU. The B22 models are rebadged IWS workstations. They run the BTOS operating system, which is a version of Convergent's CTOS, as well as CP/M and MS-DOS.^[2]

Systems support 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 is 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

External links

• B20 brochure, 1982

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