File:IBM 604 Electronic Calculator (1948).jpg
Original file (2,048 × 3,072 pixels, file size: 4 MB, MIME type: image/jpeg)
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DescriptionIBM 604 Electronic Calculator (1948).jpg |
This programmable electronic calculator uses some 1400 electron tubes; its weight is more than 600 kilograms. Instead of using a keyboard and screen, input and output was by means of punched cards. The punched card machine (almost the same size as the 604 itself) is not shown here. The 604 was IBM's 2nd step into the realm of electronic calculators, and at the time had many innovative features. But it differs in so many ways from modern calculators (speed, size, ease of use, reliability, price...) that you can hardly compare them. Visit my blog at ideonexus.com for science news and speculation. |
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Unknown date Date and/or time in the file Exif metadata are incorrect/invalid. |
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Source | Flickr: IBM 604 'Electronic Calculator' (1948) | ||
Author | Ryan Somma | ||
Permission (Reusing this file) |
This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 02:49, 10 January 2016 | 2,048 × 3,072 (4 MB) | Bubba73 (talk | contribs) | Reduce the glare some | |
04:54, 6 January 2015 | 2,048 × 3,072 (1.61 MB) | Bubba73 (talk | contribs) | slight color correction, but it looks like it is lit by different colors of lights | ||
20:04, 24 November 2011 | 2,048 × 3,072 (2.67 MB) | Rotatebot (talk | contribs) | Bot: Image rotated by 270° | ||
18:52, 24 November 2011 | 3,072 × 2,048 (3.08 MB) | ArnoldReinhold (talk | contribs) |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | Canon |
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Camera model | Canon EOS DIGITAL REBEL |
Exposure time | 3/5 sec (0.6) |
F-number | f/5.6 |
ISO speed rating | 400 |
Date and time of data generation | 00:11, 1 January 1980 |
Lens focal length | 18 mm |
Width | 2,048 px |
Height | 3,072 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | Adobe Photoshop Elements 14.0 (Windows) |
File change date and time | 21:48, 9 January 2016 |
Y and C positioning | Centered |
Exif version | 2.21 |
Date and time of digitizing | 00:11, 1 January 1980 |
Meaning of each component |
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Image compression mode | 3 |
APEX shutter speed | 0.73696899414062 |
APEX aperture | 4.9708557128906 |
APEX exposure bias | 0 |
Maximum land aperture | 3.6147155761719 APEX (f/3.5) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 3,443.9461883408 |
Focal plane Y resolution | 3,442.0168067227 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Scene capture type | Landscape |
Serial number of camera | 1920630923 |
Lens used | 18.0-55.0 mm |
Date metadata was last modified | 16:48, 9 January 2016 |
Unique ID of original document | B669E5E6101193F69A4E51620B4E0321 |