Editing Scientific Data Systems (section)

==SDS software==
The primary operating system for the 900 series was called Monarch. For the Sigma 32-bit range RBM, a real-time and batch monitor, and BTM, a batch and timesharing monitor were available. In 1971 a more sophisticated timesharing system [[Universal Time-Sharing System|UTS]] was released, which was developed into [[CP-V operating system|CP-V]]. The RBM operating system was replaced by CP-R, a real-time and timesharing system. In March 1982 Honeywell gave the remaining software for the 900 series to a group in Kansas City that offered to continue making copies for people still using the systems. Honeywell had stopped supporting the systems many years before this. In September 2006, this collection was donated to the [[Computer History Museum]] along with all of the program's original documentation, and copies of most of the SDS user's manuals. This is one of the largest collections of software to have survived from the 1960s intact. Unfortunately, the timesharing software for the 940 series was not present in the Honeywell LADS Library and does not appear to have survived. Copies of the original system developed at [[UC Berkeley]] exist as file system backups. Most of the customers for 940 systems (in particular Tymshare) made extensive modifications to the 940 system software, and no copies of that version of the software are known to have survived.

Multiple simulators for the Sigma series are known to exist, and Sigma series software is being collected by the [[Computer History Museum]]. Early versions were not copyrighted (CP-V C00 and earlier), while later versions developed by Honeywell were (CP-V E00 and F00). Some copies of CP-V D00 were released without licensing agreements and subsequently public domain status was claimed by users.

===CE16 and CF16===
The Xerox CE16 and CF16 [[minicomputer]]s, announced in May 1969, were small 16-bit computers designed primarily for process control applications. Both systems came with a base 4&nbsp;KW of 16-bit core memory, expandable to 16&nbsp;KW, and three "interrupt channels." The CE16 CPU can perform an addition in 16&nbsp;μsec and a (software) multiplication in 126&nbsp;μsec. Its price of $12,800 was {{inflation|US|12800|1969|fmt=eq}}. The CF16 CPU is rated at 5.33&nbsp;μsec for addition and 42&nbsp;μsec for (hardware) multiplication. It cost $14,900, {{inflation|US|14900|1969|fmt=eq}}.<ref>{{cite magazine |title=controller/computers |url=http://bitsavers.trailing-edge.com/magazines/Datamation/196905.pdf |access-date=July 18, 2023 |magazine=Datamation |volume=15 |issue=5 |page=193 |date=May 1969 |archive-date=July 18, 2023 |archive-url=https://web.archive.org/web/20230718194304/http://bitsavers.trailing-edge.com/magazines/Datamation/196905.pdf |url-status=live }}</ref><ref>{{cite magazine |title=Technology Profile: Mini-Computers |url=http://bitsavers.trailing-edge.com/magazines/Modern_Data/Modern_Data_1969_08.pdf |page=61 |access-date=July 18, 2023 |magazine=Modern Data |volume=2 |issue=8 |date=August 1969 |archive-date=July 18, 2023 |archive-url=https://web.archive.org/web/20230718194317/http://bitsavers.trailing-edge.com/magazines/Modern_Data/Modern_Data_1969_08.pdf |url-status=live }}</ref>