IBM 5140 Convertible Computer
The LCD screen detaches for a color CRT to be attached. IBM didn't sell many of these due to the fact the LCD was not backlit, and the competition was less expensive.
The IBM 5140 was available in two models, the 2 and the 22; the only difference being the 22 came with diagnostics software. IBM saw little success from this machine due to high costs, slow processor at 4.77 MHz, hard to read screen, and cumbersome size. Both models were expandable to 640KB RAM with third party upgrades.
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This exhibit has a reference ID of CH1978. Please quote this reference ID in any communication with the Centre for Computing History.