PLC based car park system by Lee Vun Bing. 2. PLC based on traffic lights system by Loh Wai Kwan. 3. Relay output "proximity' sensor system by Chew Pin Fon. 4. Seismic sensor by Abdul Rahman S.S. Al-Amoudi. 5. Voice recording board by Lim Kua Chany. 6. Wireless FM microphone by Lim Yew Kim.

by LEE VUN BING
Published 1998