The CDC 160 and CDC 160-A were 12-bit
minicomputers built by Control Data Corporationfrom the late 1950s, through the mid-1960s. The 160 was designed by Seymour Cray- reportedly over a long three-day weekendFact|date=January 2008. It fit into the desk where its operator sat.
The 160 architecture was modified to become the basis of the "peripheral processors" (PPs) in the
CDC 6000 seriesmainframe computers. Large parts of the 160 instruction set were unchanged in the peripheral processors. However there were changes to incorporate the 6000 data channel programming, and control of the "central processor". In the early days of the 6000s, almost the entire operating systemran in the PPs. This left the central processor unemcumbered by operating system demands and available for user programs.
The 160 architecture used ones' complement arithmetic with end-around carry. [ [http://www.cs.uiowa.edu/~jones/cdc160/man/index.html "A Programmer's Reference Manual for the CDC-160"] by
Douglas W. Jones]
NCR joint marketed the 160-A under its own name for several years in the 1960s.
* [http://archive.computerhistory.org/resources/text/CDC/CDC.160A.1962.102646114.pdf Control Data 160-A Overview]
Wikimedia Foundation. 2010.
Look at other dictionaries:
CDC 1604 — The CDC 1604 was a 48 bit computer designed and manufactured by Seymour Cray and his team at the Control Data Corporation. The 1604 is known as the first commercially successful transistorized computer. The 1604 designation was chosen by adding… … Wikipedia
CDC 6600 — The CDC 6600 was a mainframe computer from Control Data Corporation, first delivered in 1964. It is generally considered to be the first successful supercomputer, outperforming its fastest predecessor, IBM 7030 Stretch, by about three times. It… … Wikipedia
CDC 7600 — The CDC 7600 was the Seymour Cray designed successor to the CDC 6600, extending Control Data s dominance of the supercomputer field into the 1970s. The 7600 had a 27.5 ns clock cycle and a 65 Kword primary memory using core and variable size… … Wikipedia
Control Data Corporation — (CDC) was a supercomputer firm. For most of the 1960s, it built the fastest computers in the world by far, only losing that crown in the 1970s after Seymour Cray left the company to found Cray Research, Inc. (CRI). CDC was one of the nine major… … Wikipedia
Control Data Corporation — Un CDC 6600 Un CDC 3800 … Wikipédia en Français
Channel I/O — In computer science, channel I/O is a generic term that refers to a high performance input/output (I/O) architecture that is implemented in various forms on a number of computer architectures, especially on mainframe computers. In the past they… … Wikipedia
Minicomputer — For small modern computers, see Small form factor, nettop, etc. PDP 7 A minicomputer (colloquially, mini) is a class of multi user computers that lies in the middle range of the computing spectrum, in between the largest multi user systems… … Wikipedia
NLS (computer system) — NLS, or the oN Line System , was a revolutionary computer collaboration system designed by Douglas Engelbart and implemented by researchers at the Augmentation Research Center (ARC) at the Stanford Research Institute (SRI) during the 1960s. The… … Wikipedia
Signed number representations — In computing, signed number representations are required to encode negative numbers in binary number systems. In mathematics, negative numbers in any base are represented by prefixing them with a − sign. However, in computer hardware, numbers are … Wikipedia