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The Epson PX-4 computer was the successor of the popular HX-20 model.
The main cosmetic difference is a wider screen that can be adjusted to the right angle. There are 2 ROM slots under the machine to implement additional ROM programs.
On the right of the LCD display can be plugged a tape-recorder, a plotter, RAM expansions etc.
A lot of peripherals were available for this little computer (see hardware page), at least in japan.
The PX-4 was later superceded by the PX-8.
Our model: H401E Code UA
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This exhibit has a reference ID of CH1329. Please quote this reference ID in any communication with the Centre for Computing History.