00673nam a2200205Ia 4500 NORSU 20240527072756.0 240215s9999 xx 000 0 und d 971-8636-01-3 NORSU-Dum NORSU-Dum 681.1 B45 c2 Berlin, Howard M. 555 Timer Applications Sourcebook with Experiments: Techniques, applications, and experiments using the 555IC timer By Howard M. Berlin E & L Instruments, Inc. 1976 Philippines 158 pages, 22 cm. Includes appendix, bibliographic references, and index. BK ddc ddc BK 0 0 ddc 0 0 NORSU-Dum NORSU-Dum CIRC 2024-02-15 17632 0 Circ 681.1 B45 c2 NORSU000026459 2024-02-15 Copy 2 2024-02-15 BK 22053 22053