Fairchild alumni founded Amelco with Teledyne's 1961 financing

The record

The Computer History Museum's Silicon Engine archive documents that Amelco Semiconductor was founded in 1961 in Mountain View, California, with financing from Teledyne Corporation arranged by financier Arthur Rock, for the stated purpose of building monolithic integrated circuits to support Teledyne's military business. The museum's company entry names four Fairchild Semiconductor founders as Amelco's founders: Jean Hoerni, Eugene Kleiner, Jay Last, and Sheldon Roberts. The museum's separate biographical entries for Hoerni and Last each independently date the move to February 1961, describing it as a departure from Fairchild to help found the Amelco division of Teledyne, Inc. Roberts's own entry confirms he left with Jay Last to found Amelco Semiconductor, a division of Teledyne Inc., in 1961, without naming the specific month. Amelco was later renamed Teledyne Semiconductor, then spun out in 1993 as Telcom Semiconductor, which Microchip acquired in 2000.

What the documents establish

These two archive pages agree on the core facts, the 1961 founding, the Teledyne financing arranged by Arthur Rock, and the military-industry rationale, but they do not agree on the full roster. The company entry lists Kleiner among Amelco's four founders, while Kleiner's own biography describes a different path: it credits him with initiating contact with Arthur Rock during the 1957 departure from Shockley that founded Fairchild, and states he went on in 1972 to co-found the venture firm Kleiner Perkins, with no mention of Amelco. This entry does not resolve that discrepancy; Hoerni, Last, and Roberts each have individual biographical confirmation of the Amelco move, while Kleiner's individual biography does not corroborate the company entry's inclusion of him. All three men who joined Fairchild in 1957 and left for Amelco in early 1961 are independently documented; a fourth is named only on the company summary page.

The operating read

This is an editorial reading beyond the archive. A founder or researcher relying on any single summary page, whether a museum's, a company's, or a law firm's, for a roster of founders or participants should check whether an individual biographical or filed record corroborates that name specifically, rather than accepting a group listing at face value. Institutional archives compiled over years, as this one appears to have been, can carry small internal inconsistencies of exactly this kind; the fix is not to discard the archive but to prefer the more specific, individually sourced record when two pages from the same source disagree.

What to check before you decide

Before citing a founder roster or a financing arrangement from a summary page, check the more specific record behind it.

• Does an individual biography, filing, or first-person account corroborate each name on a group founder list?
• When two pages from the same archive or institution disagree, which one carries more specific, individually sourced support?
• Is a financing arrangement, who arranged it, for whom, and why, attributed to the correct transaction, rather than conflated with an earlier or later one involving the same people?

This is an editorial checklist. Where an archive's own pages conflict, this entry has flagged the conflict rather than silently choosing one version.