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Liquid crystal display: film super twist nematic (FSTN) 2-bit-per-pixel (4-level) grayscale, 640-by-480 pixels, with adjustable backlighting.
 
Liquid crystal display: film super twist nematic (FSTN) 2-bit-per-pixel (4-level) grayscale, 640-by-480 pixels, with adjustable backlighting.
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The PowerBook 150 video display is a 9.5-inch flat panel film super twist nematic (FSTN) dual-scan liquid crystal display (LCD). It provides 640-by-480 2-bit per pixel resolution, is capable of displaying 4 levels of gray, and has on-demand cold cathode fluorescent lamp (CCFL) backlighting. The video implementation on the PowerBook 150 is similar to the video on the PowerBook Duo 230. The video RAM is a 128K x 8-bit device that stores the data required to update and refresh the flat-panel video display.  
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The PowerBook 150 video display is a 9.5-inch flat panel film super twist nematic (FSTN) dual-scan liquid crystal display (LCD). It provides 640-by-480 2-bit per pixel resolution, is capable of displaying 4 levels of gray, and has on-demand cold cathode fluorescent lamp (CCFL) backlighting. The video implementation on the PowerBook 150 is similar to the video on the PowerBook Duo 230. The video RAM is a 128K x 8-bit device that stores the data required to update and refresh the flat-panel video display.
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===ATA===
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The implementation of the ATA interface on the PowerBook 150 computer is a subset of the ATA interface specification, ANSI Proposal X3T9.2/90-143, Revision 3.1. The controller hardware in the PowerBook 150 supports direct memory mapped programmed I/O transfers only and does not support DMA transfers. The IDE drive interfaces with the PowerBook 150 main logic board through a 44-pin connector on the end of a ribbon-cable. The connector on the controller electronics of the IDE drive is a standard ATA 40-pin configuration. The PowerBook 150 IDE interface connector has 4 additional lines, which provide ground and +5 volts of power to the drive.
    
=Documentation=
 
=Documentation=
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* [[Apple Computer]]
 
* [[Apple Computer]]
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{{PowerBook Series}}
    
[[Category:Apple]]
 
[[Category:Apple]]
 
[[Category:Laptops]]
 
[[Category:Laptops]]
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[[Category:68030]]
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[[Category:1994]]

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