The GridCase was about the same size and featured the same robust magnesium case as Compass model, but Grid forwent the Compass's expensive and power-hungry electroluminescent display and bubble memory.
The GridCase series was composed of 4 models. The GridCase I featured a bottom-of-the-range LCD display, the GridCase II had an enhanced LCD "that more than one person can read" Grid said, the GridCase III offered a high-contrast gas-plasma display, and the GridCase IV which used a full size yellow electoluminescent screen that was also offered on the high end earlier Grid Compass Computers.
The keyboard was the same as the IBM PCjr, not very convenient but with a good tactile feedback provided by a key click similar to that on the IBM PC. Two power modules were available, a rechargeable battery pack and an AC transformer. Both were the same size and fitted in a large socket on the rear panel. Each battery pack lasted 4 to 5 hours for the LCD models, and one hour with the plasma model.
All models came with eight sockets for ROM chips. Although only four of them could be accessed by the user, Grid offered programs such as MS-DOS, GW-BASIC or Lotus 1-2-3 on ROM chips.
Several peripherals were available, a base station battery charger and power source, a 5.25" and 3.5" floppy disk drive units and a 10 MB hard disk. They all were of the same size and could be stacked. 
|GRiDCase|| Followed by|
|Windows XP branch|
|IBM PC branch|