The IBM 1401's Unique Qui-Binary Arithmetic

The IBM 1401's Unique Qui-Binary Arithmetic
Ken describes in thorough detail how the IBM 1401 — which was first introduced in 1959 — takes a decimal number as an input and operates on it one BCD digit at a time. Before performing the instruction the BCD number is converted to qui-binary.
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Old, not obsolete: IBM takes Linux mainframes back to the future
IBM introduced several significant new elements for its Linux server stack last month: support for KVM on its z Systems mainframes, Linux-only models in both the z Systems and Power Systems ranges, and a new purchasing model. The most technically …
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IBM to Buy Weather Company, Why That's a Big Deal
Techonomy CEO David Kirkpatrick discusses the internet of things. He speaks on "Bloomberg ‹GO›." (Source: Bloomberg). Related. First Impressions From Facebook's Third-Quarter Earnings. Most Recent Videos. Is Facebook the Best Managed Company in …
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