HP Forum Archive 21

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Non HP very early LCD Calc? Message #1 Posted by Ian Phillips on 5 Oct 2012, 9:19 a.m. Long before I had an HP calculator I remember looking at an LCD model but lately out of curiosity I have tried to find reference to it but drawn a total blank. Now I wonder whether my memory is playing tricks. I do not know the exact date but it was definitely before 1974. The display was either tilted or was tilt-able, the characters were fairly big, maybe 15 to 20mm although low contrast and I am pretty sure it was manufactured by Siemens. Does anyone know what it might have been? Ian

Re: Non HP very early LCD Calc? Message #2 Posted by Thomas Radtke on 5 Oct 2012, 1:42 p.m., in response to message #1 by Ian Phillips Maybe a Lloyds Accumatic 100?

Re: Non HP very early LCD Calc? Message #3 Posted by Luiz C. Vieira (Brazil) on 5 Oct 2012, 2:21 p.m., in response to message #2 by Thomas Radtke Hi. Interesting... According to this site (I see you actually point to their picture) it had a filament lamp to provide backlight illumination. The LCD's low power feature seemed not to be the key, for they used a filament lamp to illuminate it. Anyway, it was the first one. Looks pretty nice, though. Luiz (Brazil) Edited: 5 Oct 2012, 2:22 p.m.

Re: Non HP very early LCD Calc? Message #4 Posted by Joerg Woerner on 5 Oct 2012, 5:57 p.m., in response to message #3 by Luiz C. Vieira (Brazil) Wasn't really reliable. These guys dropped the technology in 1972 in favor of LED's. Cheers, Joerg

Re: Non HP very early LCD Calc? Message #5 Posted by Ian Phillips on 6 Oct 2012, 7:22 a.m., in response to message #3 by Luiz C. Vieira (Brazil) The calculator I played with was certainly about the size of the Lloyd one, but the display did not have a backlight and I'm sure I would have remembered the weight of four D cells. I am still positive that there was a German connection and I can still see 'Siemens' in my distant memory. Oh well. I'll keep looking. Thanks Ian

Re: Non HP very early LCD Calc? Message #6 Posted by Joerg Woerner on 6 Oct 2012, 9:24 a.m., in response to message #5 by Ian Phillips Siemens??? There was a Sears Desktop out but I remember it was identical with the above pictured "Rockwell" model. Regards, Joerg

Re: Non HP very early LCD Calc? Message #7 Posted by Frank Boehm (Germany) on 6 Oct 2012, 1:57 p.m., in response to message #6 by Joerg Woerner very likely "Sears" and not "Siemens" - Siemens never built any calculators (actually neitehr did Sears - as Joerg said, the LCD desktop is a Lloyds OEM. Btw. Rockwell did not sell these under their Rockwell brand, they only did OEM. From the same timeframe there is a pocket calculator very much like the Minimath LCD, called Lloyds Accumatic 40, also available from other brands...) Another possibility would be a Rapid Data Rapidman 1208LC (another Rockwell OEM). These were a bit later then the Llyods 100.

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