- Published in issue 12/1992 on page 74
Single IC timer
Timer chip ICM7250 from Maxim enables a very simple timer to be designed. The IC has eight programmable inputs for connectlng to, say, two thumb wheel switches. Units are set in BCD code on the four lowest inputs, pins 1-4, and tens on the highest, pins 5-8. Thus, the user can select any time between 00 and 99 units.