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Announced April 7, 1964 and withdrawn March 15, 1977.
The IBM System/360 Model 50 had approximately ten times the internal power of the Model 30 when performing a mix of computations. It was the most powerful unit in the medium price range with communication facilities.
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Decimal add (5 + 5 digits) |
50,000 |
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Fixed point add (1 word + 1 word) (32 bits) |
307,600 |
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Fixed point multiply (1 word x 1 word) |
36,000 |
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Fixed point divide (2 words div. by 1 word) |
28,700 |
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Floating point multiply (1 word x 1 word) |
48,200 |
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Speed |
Data width (bits) |
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Machine cycle time |
500 nanosec. |
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Logic circuits |
30 nanosec. |
32 |
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Memory cycle time
64K, 128K, 256K |
2 microsec. |
32 |
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Registers
16 general purpose
4 floating point |
500 nanosec.
1 microsecond |
32
64 |
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Control
Read only storage |
500 microsec. |
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Bulk core storage
1,048,576 to 8,388,608 |
8 microsec. |
32 |
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Data rate
per channel
(Char. a Sec.) |
Control units
per channel |
I/O units
per channel |
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Channels:
Selector
(up to 3) |
800,000 |
8 |
256 each |
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High Speed |
1,250,000 |
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Multiplexor
Multiplex mode
Burst mode |
40,000
200,000 |
8 |
248 |
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