25,161
edits
Changes
no edit summary
'''Burroughs B-5500''', (B5000, B5500, B7800)<br/>
the second member of [https://en.wikipedia.org/wiki/Burroughs_large_systems Burroughs large systems] in 1964, with a 3 times speed improvement of the initial '''B-5000''' of 1961 which was designed by chief architect [[Mathematician#RSBarton|Robert S. Barton]], a unique machine using [https://en.wikipedia.org/wiki/Electronic_component discrete transistor logic] and [[Memory#Core|magnetic core memory]], well ahead of its time.
The B-5000 family were [https://en.wikipedia.org/wiki/48-bit_computing 48-bit] [https://en.wikipedia.org/wiki/Stack_machine stack machines] with [https://en.wikipedia.org/wiki/Multiprocessing multitasking] facilities, all code automatically [https://en.wikipedia.org/wiki/Reentrancy_(computing) reentrant].They were used a partially data-driven [https://en.wikipedia.org/wiki/Tagged_architecture tagged] and [https://en.wikipedia.org/wiki/Burroughs_large_systems_descriptors descriptor-based] design, supporting exclusively high-level [[Languages|programming languages]].
The [[Algol|ALGOL 60]] dialect chosen for the B-5000 was [https://en.wikipedia.org/wiki/Elliott_ALGOL Elliott ALGOL], first designed and implemented by [[Mathematician#CARHoare|C.A.R. Hoare]] on an [https://en.wikipedia.org/wiki/Elliott_803 Elliott 503].
All [https://en.wikipedia.org/wiki/System_software system software], such as [https://en.wikipedia.org/wiki/Burroughs_MCP Burroughs MCP], was written in an extended variety of ALGOL 60, [https://en.wikipedia.org/wiki/Executive_Systems_Problem_Oriented_Language ESPOL].
