DIGITAL STOP WATCH
Here’s a digital stop watch built around timer IC LM555 and 4-digit counter IC with multiplexed 7-segment output drivers (MM74C926)....
Here’s a digital stop watch built around timer IC LM555 and 4-digit counter IC with multiplexed 7-segment output drivers (MM74C926)....
This circuit gives out an alarm when its sensor is wetted by water. A 555 astable multivibrator is used here...