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Jerryobject (talk | contribs) WP:LINKs: underscores > spaces, add. WP:REFerence WP:CITation parameters: update-standardizes, respaces, conform to master templates. MOS:FIRSTABBReviations clarify, define before WP:ABBRs in parentheses. WP:NAVBOXes: update, reorder. |
InTheCastle (talk | contribs) →Development: Added μPD7720's feature along with reference. |
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In 1979, [[Intel]] released the 2920 as an "analog signal processor".<ref>{{Cite web |url=https://www.intel.com/Assets/PDF/General/35yrs.pdf#page=17 |title=Archived copy |access-date=2019-02-17 |archive-date=2020-09-29 |archive-url=https://web.archive.org/web/20200929045706/https://www.intel.com/Assets/PDF/General/35yrs.pdf#page=17 |url-status=dead}}</ref> It had an on-chip ADC/DAC with an internal signal processor, but it didn't have a hardware multiplier and was not successful in the market.
In 1980, the first stand-alone, complete DSPs – [[Nippon Electric Corporation]]'s [[NEC µPD7720]] based on the modified Harvard architecture<ref>{{cite web |url=https://www.datasheetarchive.com/datasheet?id=03a93172fcfb5d333133fa8d7fb1d6fa7cf492&type=M&term=upd7720 |title=NEC Electronics Inc. μPD77C20A, 7720A, 77P20 Digital Signal Processors |page=1 |accessdate=2023-11-13}}</ref> and [[AT&T Corporation|AT&T]]'s [[AT&T DSP1|DSP1]] – were presented at the [[International Solid-State Circuits Conference]] '80. Both processors were inspired by the research in [[public switched telephone network]] (PSTN) [[telecommunication]]s. The µPD7720, introduced for [[voiceband]] applications, was one of the most commercially successful early DSPs.<ref name="computerhistory1979"/>
The Altamira DX-1 was another early DSP, utilizing quad integer pipelines with delayed branches and branch prediction.{{citation needed|reason=no mention on the web, except of WP text copies and translations|date=December 2014}}
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