traffic-light control system - with the Junior Computer

This classical task for a microcomputer, a control function which can otherwise only be implemented with a considerable amount of hardware, is executed by a program. Computers have been employed for fullscale versions of this technique for some time. This is now an opportunity to utilise the Junior Computer for the same application in miniature. 0 08 2 T5 traffic-light control system... O D. Herzberg . .. with the Junior Computer The hardware can be easily constructed on a small perforated board, which can be positioned in the vicinity of the port connector. The two traffic lights are connected via two three-core control lines. The positive operating voltage can be taken from smoothing capacitor C5 of the basic power supply for the Junior Computer. Any other unregulated 12 V power supply is just as suitable. Bulbs with different voltage ratings will of course require a different operating voltage. Constructors who prefer to use LEDs for the traffic lights must join the anodes of t...