File:IBM PC Motherboard (1981).jpg
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Summary
[edit]DescriptionIBM PC Motherboard (1981).jpg |
English: IBM PC Motherboard from 1981. The IBM Personal Computer Model 5150 was the first computer of the type which is today (2023) generically known as a "PC". It had an Intel 8088 microprocessor with 4,77 MHz, five bus connector ports for expansion cards (ISA Bus, 8 Bit) and 16 KB to 64 KB RAM on the motherboard - installed on the pic are 32 integrated circuits (4x8 ICs below right) of the type AMD Am9016 with 16,384 Bits each (2 kByte), resulting in the RAM having the maximum installable size of 64 kByte. The additional 9th row separately below is most likely for parity checking (error control). |
Date | |
Source | Own work |
Author | German |
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Annotations InfoField | This image is annotated: View the annotations at Commons |
14.31818 MHz quartz crystal oscillator
Chassis ground connected by screw
Variety of different logic ICs mainly of the type 74LSxx, according to the housing imprints from at least three different manufacturers: Motorola, Fairchild and Texas Instruments
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 01:21, 20 December 2014 | ![]() | 3,206 × 2,294 (3.36 MB) | Autopilot (talk | contribs) | Corrected perspective to square up the motherboard edges. |
00:16, 10 March 2012 | ![]() | 3,206 × 2,294 (2.82 MB) | German (talk | contribs) | ||
00:16, 10 March 2012 | ![]() | 3,206 × 2,294 (2.82 MB) | German (talk | contribs) |
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Camera manufacturer | SONY |
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Exposure time | 1/10 sec (0.1) |
F-number | f/3.5 |
ISO speed rating | 100 |
Date and time of data generation | 17:44, 9 March 2012 |
Lens focal length | 18.5 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS2 Windows |
File change date and time | 19:35, 9 March 2012 |
Y and C positioning | Co-sited |
Exposure Program | Aperture priority |
Exif version | 2.21 |
Date and time of digitizing | 17:44, 9 March 2012 |
Meaning of each component |
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File source | Digital still camera |
Scene type | A directly photographed image |
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Supported Flashpix version | 1 |
Image width | 3,206 px |
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Date metadata was last modified | 15:05, 9 March 2012 |
IIM version | 2 |