The Contura is a line of notebook-sizedlaptops produced by Compaq from 1992 to 1996. The Contura was Compaq's first attempt at making an affordable, entry-level laptop.
Clockwise from upper left: Top-down view of 430C with case closed; detail of keyboard and trackball; rear ports (from left to right: DC power, parallel, docking base, serial, PS/2, VGA)
The main Contura series included models 3/20, 3/25, 3/25c, 4/25, 4/25c, 4/25cx, 400, 400C, 400CX, 410, 410C, 410CX, 420C, 420CX, 430C, and 430CX. These were standard-size notebooks, not ultra-portable subnotebook computers. The "X" designation denoted an active matrix screen.
The Compaq Contura Aero 4/25 and 4/33c were among the earliest subnotebook computers that acted as a precursor to netbooks. They were released in 1994 and originally ran MS-DOS and Windows 3.1. They were also able to run Windows 95 after its release in 1995. They were similar to the Armada line of laptop computers, but smaller. Although the 4/25's GPU can produce color, the datasheet for the device states it is incapable of producing color graphics. This does not apply to the 4/33c.
Display:Passive matrix gray scale VGA (16 shades (640x480) high resolution, 64 shades (320x200) low resolution, color capable when using an external VGA monitor)
RAM: 4 MB built-in (expandable to a maximum of 8 MB or 12 MB using an optional 4 or 8MB Compaq branded module, or 20 MB using a third party 16 MB module)
256 KB video memory (512 KB exists in the system, but is not accessible by the GPU.)
Display: Passive matrix color VGA (16 colors (640x480) high resolution, 256 colors (320x200) low resolution)
RAM: 4 MB built-in (expandable to a maximum of 8 or 12 MB using an optional 4 MB or 8 MB Compaq branded module, or 20 MB using a third party 16 MB module)
256 KB video memory (512 KB exists in the system, but is not accessible by the GPU.)
This line of notebook PCs from Compaq was first succeeded by the Compaq C-Series[5] and then by the Aero 1550 Pocket PC.[6] The line of handheld devices starting from the Aero 1550 Pocket PC were finally moulded into the iPAQ line of handheld devices, which was handled by Hewlett-Packard, after their acquisition of Compaq.