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.

The IBM 5100 Portable Computer, as depicted in a 1970s Scientific American ad. BY Harry McCracken History records August 12, 1981 as the day IBM changed the computer industry forever by unveiling ...

IBM's PC wasn't the first or even the second version, but somehow its version captured the market.

The 5100 grew out of an IBM project called SCAMP, short for “Special Computer APL Machine Portable.” Like the 5100, this prototype let you build software using the APL programming language.

The IBM 5100 was released in 1975, six years before the IBM PC. It was IBM's first desktop portable computer with 100 KB of ROM and 64 KB of RAM installed but it was said that it was not popular ...

Aug. 12 marked the 30th anniversary of the introduction of IBM's 5150 personal computer. Recently, IBM executive Mark Dean, one of the engineers of the original IBM PC, said the post-PC era is ...

IBM Netfinity 5100. Cutting-edge design, stellar performance, aggressive pricing, and a high level of redundancy helped the IBM Netfinity 5100 take first place in our roundup.

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.

Sure, IBM was the cat's pajamas of the portable-computer business -- in 1974. The IBM 5100 Portable Computer weighed 50 pounds and cost about $30,000 in today's dollars.