Image:4prongplug.JPG
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[edit] Summary
Four prong standard Telephone plug as used in Bell System phones from mid 1960s to mid 1970s, on a line cord having a five pin flat plug at the phone end as used at that time on Trimline desk phones.
[edit] Licensing
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I, the copyright holder of this work, hereby release it into the public domain. This applies worldwide. In case this is not legally possible, |
File history
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 19:53, 4 March 2008 | 1,052×1,024 (163 KB) | Jim.henderson (Talk | contribs) | (Four prong standard Telephone plug as used in Bell System phones from late 1960s to mid 1970s, on a line cord from the early 1970s having a five pin flat plug at the phone end as used at that time) |
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Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
| Camera manufacturer | Canon |
|---|---|
| Camera model | Canon PowerShot A570 IS |
| Exposure time | 1/250 sec (0.004) |
| F-number | f/4 |
| Date and time of data generation | 13:20, 24 February 2008 |
| Lens focal length | 5.8 mm |
| Orientation | Normal |
| Horizontal resolution | 180 dpi |
| Vertical resolution | 180 dpi |
| Software used | Adobe Photoshop 7.0 |
| File change date and time | 17:52, 27 February 2008 |
| Y and C positioning | 1 |
| Custom image processing | Normal process |
| Exposure mode | Auto exposure |
| White balance | Auto white balance |
| Digital zoom ratio | 1 |
| Scene capture type | Landscape |
| ISO speed rating | 80 |
| Exif version | 2.2 |
| Date and time of digitizing | 13:20, 24 February 2008 |
| Image compression mode | 3 |
| Shutter speed | 7.96875 |
| Aperture | 4 |
| Exposure bias | 0 |
| Maximum land aperture | 2.75 |
| Metering mode | Pattern |
| Flash | 16 |
| Color space | sRGB |
| Focal plane X resolution | 13653.333333333 |
| Focal plane Y resolution | 13633.136094675 |
| Focal plane resolution unit | inches |
| Sensing method | One-chip color area sensor |
