Burroughs B2500 - Cancellation and Retirement

Cancellation and Retirement

Unisys cancelled further V series hardware development in 1991, and support ended in 2004. In the B4900 and later machines, integer operations of 10 digits or less were now handled in a parallel way; only longer operands continued to use the serial method. And all floating point operations were limited to 17 digits of precision. Later Medium Systems machines added an accumulator register and accumulator/memory instructions using 32-bit, 7-digit integers and 48-bit or 80-bit floating point values, all aligned on 16-bit word boundaries.

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    The student who secures his coveted leisure and retirement by systematically shirking any labor necessary to man obtains but an ignoble and unprofitable leisure, defrauding himself of the experience which alone can make leisure fruitful.
    Henry David Thoreau (1817–1862)