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Amazon.com: Juried Engineering NE555P Single Precision Timer IC 555 & 8 Pin DIP Machined Round Sockets Breadboard-Friendly (Pack of 5) : Industrial & Scientific
Amazon.com: 555 timer: Books
555 Timer Applications Sourcebook Experiments by H. Berlin http://www.amazon.com/dp/8176567906/ref=cm_sw_r_pi_dp_wxoS… | Electronics basics, Timer, Cool electronics
Amazon.com: Cylewet 30Pcs NE555P Single Precision Timer with Sockets, NE555N NE555 Timer Chip IC Pulse Generator (Pack of 30) CYT1108 : Industrial & Scientific
Amazon.com: 555 Timer IC circuit Magic's: Four Way Traffic Lights, Glimmering Police Lights, Metal Detector, Television Remote Control and Motor Speed Control eBook : K, Anbazhagan , K, Ambika Parameswari: Kindle Store
ERH India (Pack of 100) NE555 NE555P DIP-8 555 Timer-based IC GENUINE 555 TIMER IC with 8 Pin Base for Electronic Projects : Amazon.in: Computers & Accessories
555 Timer Applications Sourcebook Experiments: H. Berlin: 9788176567909: Amazon.com: Books