ibm 1442造句

"' IBM 1442 "'was a combination IBM IBM Doilies, " cards with every possible hole punched.
One "'IBM 1442 Model 5 "'card punch could be attached to an adapter in the Terminal Control Unit.
The IBM 1442 reader could read 400 cards / minute at full speed, but just a little hesitancy in the read commands would halve its throughput or worse.
The card reader / punch unit, similar to an IBM 1442, could read up to 400 cards per minute ( cpm ) and punch up to 355 cpm.
On an 1130 system the 2501 can be used in addition to the IBM 1442 Since the 1442 has a maximum speed of 300 or 400 CPM attaching a 2501 provides a significant increase in read speed and lower CPU usage.
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