The UK's HM Revenue and Customs has signed a £220.3 million ($301.9m) deal with Fujitsu to extend its data center contract ...

John Titor claimed to be an American soldier from 2036, based in Tampa, Florida. He was assigned to a governmental time-travel project, and sent back to 1975 to retrieve an IBM 5100 computer, which he ...

IBM chose the name 5150 for this successful personal computer, which referred to the 5100 series of IBM computers. These two versions were the only computers introduced in this series. IBM 5100. IBM’s ...

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The IBM 5100 Portable Computer. Photo: IBM history archive. Date: 1975. From the IBM History website: "One of the first 'portables' on the market, it can store more information than any other ...

For comparison, the IBM 5100 cost between £7,217 ($8,975) and £16,000 ($19,975) and the Apple 1 for less than $700 (£556). However, the reviewer did also note that the Q1 was 'approachable and ...

The advantages of being able to run APL on a single-user, portable system, eventually led to the IBM 5100. Its story is succinctly summarized by [Bradford Morgan White] in a recent article.

Top image: The IBM 5100, image from December 1975 issue of BYTE. Thanks to [Stephen Walters] for the tip. Posted in History , Retrocomputing Tagged APL , ibm 5100 ...

If you think your fingers are sore from playing too much Song Pop on your smartphone, you probably haven’t ever had the pleasure of taking the IBM 5100 with you for a day’s portable computing.