programmable timer/controller

The circuit described here is a versatile timer/controller, capable of switching 4 separate outputs on or off at 4 pre-programmed times every day. The circuit is ideally suited for the control of domestic appliances such as cookers, central heating, intruder alarms (to be switched on at night) etc., or can be used as a straightforward 24 hour `radio-snooze-alarm` clock. Almost all the work is performed by a single IC, so that the circuit is both compact and relatively inexpensive.