Data General-One



The Data General-One (DG-1) was a portable personal computer introduced in 1984 by the company Data General minicomputers.

The 9-pound, battery-powered Data-One 1984 server ran on MS-DOS and had two 3½ “floppy disks, a full-stroke 79-key keyboard, 128K to 512K RAM, and a monochrome LCD capable of 80 or 80 times 25 characters or complete CGA graphics (640 and 200 times) It was a notebook comparable to the capabilities of desktop computers of the time.

The Data General-One offered several features compared to contemporary laptops. For example, the popular 1983 Radio Shack TRS-80 Model 100, a non-PC compatible machine, was sized in a comparable manner. It was a small battery-powered computer resting on his lap, but with a 32 × 8 character display (240 × 64 pixels), a rudimentary ROM menu instead of a full operating system, and no built-in floppy disk . IBM’s 1984 Notebook PC was comparable in capacity with desktop computers, but was not battery-usable and, being much larger and heavier, was by no means a laptop.

DG-1 was only a modest success. One problem was the use of 3½ “floppy disks, so popular software was not widely available (5.25” is still the norm), a serious problem since then – common floppy disk protection systems prevented users to copy the software in this format. . The CPU was a CMOS version of the 8086, compatible with the IBM PC 8088, except that it was running slightly slower at 4.0 MHz instead of the 4.77 MHz standard. Unlike the laptop PC, the DG-1 laptop could not take the usual PC / XT expansion cards. The RS232 serial ports were integrated, but the CMOS (Low Battery Consumption) IOS Series Chip available at the time of design, a CMOS version of the Intel 8251, was incompatible with the IC 8250 series standard for the IBM PC. As a result, software written for the PC’s serial ports would not work properly. This required the use of written software using the relatively slower and less flexible BIOS interrupt call (014h), or software written exclusively for the DG-1. The video memory is out of the one available for the operating system; If 256 KB of RAM has been installed, only 204 KB may be available for the operating system and user programs. Although Creative Computing rated the price of US $ 2,895 as “competitive”, it was a very expensive system, and the usual additions, such as more RAM and a 5¼ “external drive, drove up the price. designed by Pierre Cardin, involved a more upmarket buyer than many typical PC buyers of the time. The Data General-One also had a built-in mute terminal emulator, suggesting an attempt to attract those in organizations with computers or mainframes as customers who would access enterprise data via terminals such as ADM-3A or Dasher terminals from Data General (the cost of the laptop would not have seemed excessive in such situations). The LCD screen displayed a very low contrast and a narrow viewing angle. InfoWorld said that “the godawful screen made a better mirror than the display,” and PC Magazine reported that “the exchange” why did not it do not we light? ‘ / ‘It’s about’ is not a joke. It happened in our offices. “



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