File:Ericofon 700 002.jpg
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[edit]DescriptionEricofon 700 002.jpg |
Svenska: Knappsatstelefon Ericofon 700, moderniserad uppföljare till den beryktade Ericofonen från 1950-talet. Ericofon 700 introducerades 1976 i samband med LM Ericssons 100-årsdag som den första helt elektroniska enstycksapparaten. Den var också Ericssons första telefon som kunde konstrueras enbart för knappval. Teknikutvecklingen hade gjort det möjligt att omvandla en knapptryckningskod till dekadisk impulsering och apparaten kunde därmed användas oberoende av vilken typ av lokalstation den var ansluten till. I Ericofon 700 utnyttjades i stor utsträckning moderna elektronikkomponenter med bl.a. integrerade kretsar, elektronisk talkrets och elektretmikrofon. Detta bidrog till telefonens goda transmissionsegenskaper, låga vikt och kompakta byggsätt. Formgivningen, utförd av den svenske formgivaren och industridesignern Carl-Arne Breger, visade likheter med föregångaren Ericofon men hade kantigare former. Dock fick den inte samma positiva mottagande som den tidigare Ericofonen och tillverkades i drygt 41.000 exemplar fram till 1984 vid Karlskronafabriken.
Ericofon 700 för AT-system, huvudapparat, anknytningsapparat till växel och sidoapparat. Orange bordsmodell med bärande stomme och kåpa av formsprutad ABS-plast och med alla komponenter sammansatta till en enhet. Ringenheten finns i tre alternativa utföranden - för tonringning, med elektromekanisk summer eller utan internt signalorgan. Knappsatsen och klykfunktionen är försänkta i apparatfoten. Klykfunktionen påverkas av apparatens tyngd. Knappsatsramen är monterad över R-knappen och lagrad i sin ena ände och R-knappen påverkas genom att man trycker ned knappsatsramen i dess andra ände. Svart apparatsnöre anslutet till väggplint med grönt plasthölje. |
Date | |
Source | http://digitaltmuseum.se/021026310667 |
Author | Truls Nord / Swedish National Museum of Science and Technology |
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current | 07:15, 29 August 2016 | ![]() | 1,063 × 817 (260 KB) | Kaiketsu (talk | contribs) | User created page with UploadWizard |
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Camera manufacturer | NIKON CORPORATION |
Camera model | NIKON D70 |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/22 |
ISO speed rating | 200 |
Date and time of data generation | 14:30, 23 March 2006 |
Lens focal length | 62 mm |
Author |
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Copyright holder |
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Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | FotoWare ColorFactory |
File change date and time | 10:43, 2 June 2006 |
Y and C positioning | 65535 |
Exposure Program | Manual |
Exif version | 2.21 |
Date and time of digitizing | 14:30, 23 March 2006 |
APEX shutter speed | 5.9068910006751 |
APEX aperture | 8.9188630026086 |
APEX exposure bias | 0.67 |
Maximum land aperture | 4.3 APEX (f/4.44) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire |
DateTime subseconds | 7 |
DateTimeOriginal subseconds | 7 |
DateTimeDigitized subseconds | 7 |
Color space | Uncalibrated |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |
Exposure mode | Manual exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Focal length in 35 mm film | 93 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |
GPS time (atomic clock) | 00:00 |
Measurement precision | Excellent (0) |
GPS tag version | 2.2.0.0 |
Custom image processing | Normal process |
Image width | 1,063 px |
Image height | 817 px |
Lens used | 18.0-70.0 mm f/3.5-4.5 |
Width | 1,063 px |
Height | 817 px |
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Date metadata was last modified | 13:13, 14 December 2007 |
Rating (out of 5) | 1 |
Keywords | telefon |
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