A more modern approach to memorising than the traditional method.

Instead of tying and untying knots in a handkerchief, the up and down buttons are pressed. An l.e.d. (the knot) then flashes for the number of times set by the buttons, followed by a short delay and begins again.

It will store up to 63 flashes, if that number were ever needed. When the number memorised is zero the knot is lit continuously.

At any time can the sequence be interrupted and adjusted.

The memory stays intact while the handkerchief is switched off and will last for at least 40 years.

To reset, hold down the reset button and switch on.

Power is from a 12V N type cell. Minimum 5V.

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