The boards are made by Sprint-Layout version 6 format, the link to the download of the working version of this program is posted on the download page.

you’ll need to Sprint Layout for opening the *.lay files:

The board is designed on the basis of installation in the Z-79 case using remote batteries. If you apply a larger case, the batteries can be placed inside. It is possible to install the indicator and buttons in one half of the case, and the boards with connectors, regulators, etc., in the other. In this case, the minimum length of the connecting wires from the sensor connector to the board is reached. The halves are connected by conductors, the length of which is not so important.

The layout of the front panel  for DIP version differs from the SMD version and only the location of the speaker is same.

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