1)   555 Timer PRO 1.2
555 Timer PRO provides an array of design wizards, circuit blocks and information panels that facilitate the use of the 555 timer. Component value calculations for the 555 take into account the supply voltage and timer fabrication (CMOS or Bipolar).
555, 556, timer, LM555, LMC555, NE555, SA555, TLC555, NTE955, ICM7555,