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22 Aug 2008 Happened across this advertisement for Signetics' Write-Only Memory IC, which was published in 1972 - you guess the exact date of publication. A copy of it resides here: www.national.com/rap/files/datasheet.pdf. Be sure to zoom in on the Block Diagram to note the handy features, and the novel
One of my tasks in the Signetics MOS marketing group was to create data sheets for new products. I wrote the 25120 WOM data sheet, copyrighted in 1972, as a lark to see what a Signetics WOM specification might look like. I used a This page has a couple of links to the PDF-scanned pages of the 25120 datasheet:
The Signetics 25000 Series 9C46XN Random Access Write. Only.Memory employs The use of Signetics unique SEX(7) process yields Vth (var.) and 25120 (9046 WOM). Clock In. Data In. Data In. (out). Address. Port A. A0. A12. A0 . A5 Column Addresses. A6 . A12 Row Addresses. On.Chip. Clock Gen. Clock Out. 1.
By some definition, a WOM is a memory device which can be written but never read. Since there should be no practical use for a memory circuit from which data cannot be retrieved, the concept is most often used as a joke or a euphemism for a failed memory device. The first use of the term is generally attributed to Signetics
One of my tasks in the Signetics MOS marketing group was to create data sheets for new products. I wrote the 25120 WOM data sheet, copyrighted in 1972, as a lark to see what a Signetics WOM specification might look like. I used a humorous EIMAC specification as a basis. If you look on the last footnote
1 Apr 2017 PDF, Signetics Fully Encoded, 9046 n N, Random Access Write-Only Memory. Also, don't forget the classic datasheet for the Watkins-Johnson WJ-G1/SMG1 Voltage-Controlled Attenuator datasheet with the Phase vs. VCTL vs. Frequency vs. Phase of the Moon Chart. While you're wasting time, you might
1 Sep 2015 The Write Only Memory was a fake part Signetics introduced April Fool's day many decades ago. It's a hoot. Do you need to eliminate bugs in your firmware? Shorten save us having to think out every case. - Francis Glassborow. The Ganssle Group file:///C:/Users/Public/Docs/Web Site - New/wom.html.
27 Feb 2011 This version of the WOM data sheet shows the various features of Signetics' Model 25120 “fully-encoded, 9046 x N Random Access, Write Only Memory". This advertisement has been saved, and greatly prized by Direct PDF download. Thanks McZ! This entry was posted on Sunday, February 27th, 2011
DESCRIPTION. The Signetics 25000 Series 9046XN Ftandom Access. Write-Only-Memory employs both enhancement and depletion mode P~Channel, N-Channel, and neulll channel MOS devices. Although a static device, a single TTL level clock phase is required to drive the on-board multi-port clock generator.
23 Sep 2011 The WOM data sheet went through the approval chain, just fine, and wound up in Signetics' new products catalog at 1970?s. dl.dropboxusercontent.com/u/85027770/TINA%27s%20funny%20pages%2C%20The%20original%20papers%20on%20the%20invention%20of%20the%20best%20electro.pdf.
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