Electronic Timers and Counters

Electronics Infoline Web

Tan timer

http://space.tin.it/scienza/fladelle/Page34.htm

http://space.tin.it/scienza/fladelle/Page32.htm

http://ourworld.compuserve.com/homepages/Bill_Bowden/page2.htm#cnt_down.gif

Beeps for 7.5 seconds after a presetted time. Adjustable time settings: 15 sec 30 sec 1 min 2 min and others.

http://space.tin.it/scienza/fladelle/Page7.htm

http://www.microchipc.com/sourcecode/PIC_Hi-Tech_C_Mike_Pearces_gym_timer.zip

http://web.tiscalinet.it/nick/cirird_40khz_cheap.htm

for 1, 2.5 and 5 mn

http://www.mrs.bt.co.uk/dubus/8704-3.pdf