File:NEC PC-9801F Motherboard with V30.jpg
Original file (2,048 × 1,536 pixels, file size: 950 KB, MIME type: image/jpeg)
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Summary
DescriptionNEC PC-9801F Motherboard with V30.jpg | |
Date | |
Source | Own work |
Author | Darklanlan |
Other versions |
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Licensing
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Annotations InfoField | This image is annotated: View the annotations at Commons |
192KB video RAM
128KB main RAM
320KB external floppy drive interface port
Monochrome and RGB monitor out
Keyboard port (Mini DIN-8 connector)
Reset switch
Slide switch to select 5 or 8 MHz CPU clock speed
Configuration DIP switches
Connect with Kanji character ROM board (Refer to File:PC-9801F Kanji ROM board.jpg)
Connect with 640KB floppy drive interface board
Connect with 16-bit 'C-Bus' expansion board (backplane)
NEC V30 CPU (Original machine has NEC's clone of Intel 8086, and V30 is around 30% faster than 8086.)
AMD 8259 Interrupt Controller (clone of Intel 8259)
NEC 8284 Clock Generator (clone of Intel 8284)
NEC 8237 DMA Controller (clone of Intel 8237)
14.318 MHz and 21.0526 MHz oscillators generate pixel master clock
Beep speaker
NEC μPD1990 Real-Time Clock (RTC) chip
Power supply connector
Rechargeable battery for RTC and SRAM (removed)
32KB BIOS ROM and 64KB built-in BASIC ROM
Items portrayed in this file
depicts
27 December 2010
0.04065040650406504065 second
2.7
7.5 millimetre
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 10:58, 10 May 2018 | 2,048 × 1,536 (950 KB) | Darklanlan | User created page with UploadWizard |
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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 | NIKON |
---|---|
Camera model | COOLPIX P4 |
Exposure time | 5/123 sec (0.040650406504065) |
F-number | f/2.7 |
ISO speed rating | 50 |
Date and time of data generation | 09:53, 27 December 2010 |
Lens focal length | 7.5 mm |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | COOLPIX P4V1.1 |
File change date and time | 09:53, 27 December 2010 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 09:53, 27 December 2010 |
Meaning of each component |
|
Image compression mode | 4 |
Exposure bias | 0 |
Maximum land aperture | 2.9 APEX (f/2.73) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 36 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Unknown |