00573nam a2200157Ia 4500003000600000005001700006008004100023020001800064040002500082082001700107100002200124245014100146260004700287300002200334500005900356NORSU20240527073207.0240215s9999    xx            000 0 und d  a971-8636-01-3  aNORSU-DumcNORSU-Dum  a681.1 B45 c1  aBerlin, Howard M. 0a555 Timer Applications Sourcebook with Experiments: Techniques, applications, and experiments using the 555IC timercBy Howard M. Berlin  bE & L Instruments, Inc.c1976aPhilippines  a158 pages, 22 cm.  aIncludes appendix, bibliographic references, and index