Image:Colossus 2005 08 13.JPG
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The front panel of the Colossus during operation. The Strowger switches, which in the 1940s were easily available and commonly used to as switches in automatic telephone exchanges, are clearly visible. Behind the panel are racks of thermionic valves. The lamps (mid-left) are arranged in columns marked off as 1000s, 100s, 10s and 1s. Lamps are arrayed in 2 rows of 5 representing the digits 0 to 9.
Not visible: far to the right a frame held a paper tape being recycled at great speed.
To the left was a teletype printing a stream of characters.
The prevailing sounds were the clicking of the stepping switches and the whirring of the tape frame.
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Photograph taken by a somewhat stunned Tony Sidaway. Colossus lives again!
File history
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 00:14, 14 August 2005 | 1,600×1,200 (624 KB) | Tony Sidaway (Talk | contribs) | (The front panel of the Colossus during operation. The Strowger switches, which in the 1940s were easily available and commonly used to as switches in automatic telephone exchanges, are clearly visible. Behind the panel are racks of [) |
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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 | FUJIFILM |
|---|---|
| Camera model | FinePixA204 |
| Exposure time | 1/60 sec (0.016666666666667) |
| F-number | f/3.5 |
| Date and time of data generation | 16:04, 13 August 2005 |
| Lens focal length | 6 mm |
| Orientation | Normal |
| Horizontal resolution | 72 dpi |
| Vertical resolution | 72 dpi |
| Software used | Digital Camera FinePixA204 Ver1.00 |
| File change date and time | 16:04, 13 August 2005 |
| Y and C positioning | 2 |
| Exposure Program | Normal program |
| ISO speed rating | 100 |
| Exif version | 2.2 |
| Date and time of digitizing | 16:04, 13 August 2005 |
| Image compression mode | 2.6 |
| Shutter speed | 6 |
| Aperture | 3.6 |
| Brightness | 1.68 |
| Exposure bias | 0 |
| Maximum land aperture | 3.6 |
| Metering mode | Pattern |
| Light source | Unknown |
| Flash | 89 |
| Color space | sRGB |
| Focal plane X resolution | 3077 |
| Focal plane Y resolution | 3077 |
| Focal plane resolution unit | 3 |
| Sensing method | One-chip color area sensor |
| Custom image processing | Normal process |
| Exposure mode | Auto exposure |
| White balance | Auto white balance |
| Scene capture type | Standard |
| Sharpness | 3 |
| Subject distance range | Unknown |
