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The SS-50 bus was an early computer bus designed as a part of the SWTPC 6800 Computer System that used the Motorola 6800 CPU. [1] [2] The SS-50 motherboard would have around seven 50-pin connectors for CPU and memory boards plus eight 30-pin connectors for I/O boards. The I/O section was sometimes called the SS-30 bus.
[5] [6] [7] By 1970 [8] there also was a time-sharing oriented operating system named KRONOS. [9] They were part of the first generation of supercomputers. [10] The 6600 was the flagship of Control Data's 6000 series. [11] [12] CDC 6600 computer. Display console shown in the foreground, main system cabinet in background, with memory/logic ...
VERSAdos was a real-time, multi-user operating system. It was the follow on product to the single user MDOS that ran the 6800 development system called the EXORciser.. Both systems features a harness with a CPU socket compatible connector.
Kronos is an operating system with time-sharing capabilities, written by Control Data Corporation in 1971. [1] Kronos ran on the 60-bit CDC 6000 series mainframe computers and their successors. CDC replaced Kronos with the NOS operating system in the late 1970s, which were succeeded by the NOS/VE operating system in the mid-1980s.
Control Data Corporation (CDC) was a mainframe and supercomputer company that in the 1960s was one of the nine major U.S. computer companies, which group included IBM, the Burroughs Corporation, and the Digital Equipment Corporation (DEC), the NCR Corporation (NCR), General Electric, and Honeywell, RCA and UNIVAC.
The SWTPC 6800 Computer System, simply referred to as SWTPC 6800, is an early microcomputer developed by the Southwest Technical Products Corporation and introduced in 1975. It was built around the Motorola 6800 microprocessor, from which it gets its name. The SWTPC 6800 was one of the first microcomputers based around the Motorola 6800. [1]
When microprocessors (CPU chips) became available, SWTPC became one of the first suppliers of microcomputers to the general public, focusing on designs using the Motorola 6800 and, later, the 6809 CPUs. The first such microcomputer introduced by the company, in November 1975, was the SWTPC 6800, which is also the progenitor of the widely used ...
In August 2006, Kronos announced it had acquired Unicru. [ 5 ] According to The Wall Street Journal , cheating on the tests, using answer keys available online, became more common during the late-2000s recession , though Kronos denies that cheating is common or significantly affects the test's validity.