multiplexor channel การใช้

• The System / 360 block multiplexor channel which could operate as a selector channel to allow attachment of legacy subsystems.
• QTAM devices were attached to a System / 360 multiplexor channel through an IBM 2703 Transmission Control Unit had been added.
• These adapters could be connected to any of the three System / 370 channel types but a block multiplexor channel was preferred.
• Using ASP made it possible to avoid the cost of the byte multiplexor channel, and offloading the job scheduling, print, and card handling also offloaded those functions from the larger machines.
• The IBM 2305 fixed head storage ( a fixed-head disk drive sometimes incorrectly called a drum ) and associated IBM 2835 Storage Control were announced in 1970, initially to connect to the 360 / 85 and 360 / 195 using the IBM 2880 Block Multiplexor Channel.
• ASP required the purchase of an additional computer to manage input and output of the hosts running the job workload, which was economically justified by the high cost of standalone byte-multiplexor channels needed to drive printers and punched card reader devices : the 360 / 50 and smaller systems had a built-in byte multiplexor channel, whereas the faster 360 / 65 and larger systems required a relatively expensive standalone unit.
• ASP required the purchase of an additional computer to manage input and output of the hosts running the job workload, which was economically justified by the high cost of standalone byte-multiplexor channels needed to drive printers and punched card reader devices : the 360 / 50 and smaller systems had a built-in byte multiplexor channel, whereas the faster 360 / 65 and larger systems required a relatively expensive standalone unit.
• Later, for larger IBM System / 360 computers, and even for early System / 370 models, the selector channels and the multiplexor channels still were bulky and expensive separate processors, such as the IBM 2860 Selector channel ( one to three selector channels in a single box ), the IBM 2870 Byte multiplexor channel ( one multiplexer channel, and, optionally, one selector subchannel in a single box ) and the IBM 2880 Block multiplexor channel ( one or two block multiplexor channels in a single box ).
• Later, for larger IBM System / 360 computers, and even for early System / 370 models, the selector channels and the multiplexor channels still were bulky and expensive separate processors, such as the IBM 2860 Selector channel ( one to three selector channels in a single box ), the IBM 2870 Byte multiplexor channel ( one multiplexer channel, and, optionally, one selector subchannel in a single box ) and the IBM 2880 Block multiplexor channel ( one or two block multiplexor channels in a single box ).
• Later, for larger IBM System / 360 computers, and even for early System / 370 models, the selector channels and the multiplexor channels still were bulky and expensive separate processors, such as the IBM 2860 Selector channel ( one to three selector channels in a single box ), the IBM 2870 Byte multiplexor channel ( one multiplexer channel, and, optionally, one selector subchannel in a single box ) and the IBM 2880 Block multiplexor channel ( one or two block multiplexor channels in a single box ).
• Later, for larger IBM System / 360 computers, and even for early System / 370 models, the selector channels and the multiplexor channels still were bulky and expensive separate processors, such as the IBM 2860 Selector channel ( one to three selector channels in a single box ), the IBM 2870 Byte multiplexor channel ( one multiplexer channel, and, optionally, one selector subchannel in a single box ) and the IBM 2880 Block multiplexor channel ( one or two block multiplexor channels in a single box ).