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The 555 timer IC is an integrated circuit used in a variety of timer, delay, pulse generation, and oscillator applications. It is one of the most popular timing ICs due to its flexibility and price. Derivatives provide two or four timing circuits in one package. [2]
Hans R. Camenzind (Swiss Standard German: [ˈkaːməntsɪnd]; 1 January 1934 – 8 August 2012 [1]) was an electronics engineer known for designing the 555 timer IC in 1971 under contract to Signetics. [2] He was the inventor on 20 US patents.
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Its engineers continued to innovate in IC technology, and remained a significant force. Around 1971, the Signetics introduced the innovative 555 timer IC, which it called "The IC Time Machine". [2] This was the first and only low-cost commercial IC timer available at the time, and soon became a best-seller.
A similar relaxation oscillator can be built with a 555 timer IC (acting in astable mode) that takes the place of the neon bulb above. That is, when a chosen capacitor is charged to a design value, (e.g., 2/3 of the power supply voltage) comparators within the 555 timer flip a transistor switch that gradually discharges that capacitor through a ...
The TK-80 has the Dynamic Display using the 555 timer IC and interrupt the CPU, it can always show the current address. In addition, the TK-80 has a CMOS battery. He decided to document its manual with a circuit diagram and assembly code of the debug monitor, influenced by the PDP-8 which was an open architecture and was used as an IC tester at ...
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Chase circuits using LEDs are commonly built by electronics hobbyists with timer (such as the 555 timer IC) and counter (such as the 4017, which allows up to 10 channels) integrated circuits. [ 1 ] [ 2 ]