Clock with big green LED display

This is a contrived project to find a use for a very cheap board containing several big LED modules.

A set of four 7-segment 1" green digits was cut from the board with a hacksaw. Left intact were the interconnections and the P-MOS digit drivers.

The clock driver is a very obsolete chip which I had lying around for ages.

The power assembly was recycled from a junked CD player.

I did have to buy a sheet of oak to make the cabinet. The rear panel is cut from an unpopulated circuit board

These are the photos of the finished clock.

Here are the photos of the parts.

Here are the circuit diagrams