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Flip clock. A flip clock (also known as a "flap clock") is an electromechanical, digital time keeping device with the time indicated by numbers that are sequentially revealed by a split-flap display. The study, collection and repair of flip clocks is termed horopalettology (from horology - the study and measurement of time and palette - and the ...
Another important timing value for a flip-flop is the clock-to-output delay (common symbol in data sheets: t CO) or propagation delay (t P), which is the time a flip-flop takes to change its output after the clock edge. The time for a high-to-low transition (t PHL) is sometimes different from the time for a low-to-high transition (t PLH).
Multivibrator. A multivibrator is an electronic circuit used to implement a variety of simple two-state [1][2][3] devices such as relaxation oscillators, timers, latches and flip-flops. The first multivibrator circuit, the astable multivibrator oscillator, was invented by Henri Abraham and Eugene Bloch during World War I.
Twemco. Twemco is a manufacturer of flip clocks from Hong Kong, China. The company emerged in 1956 and became a fully-fledged clockmaker by 1968. The factory shop is located in the Prince Edward area. [2] Twemco is the world's leading manufacturer of automatic flip clocks and its products became a symbol of Hong Kong precision engineering ...
Asynchronous circuit (clockless or self-timed circuit) [ 1 ]: Lecture 12[ note 1 ][ 2 ]: 157–186 is a sequential digital logic circuit that does not use a global clock circuit or signal generator to synchronize its components. [ 1 ][ 3 ]: 3–5 Instead, the components are driven by a handshaking circuit which indicates a completion of a set ...
A clock domain is defined as a group of flip-flops with a common clock. Such architectures can form a circuit guaranteed free of metastability (below a certain maximum clock frequency, above which first metastability, then outright failure occur), assuming a low-skew common clock. However, even then, if the system has a dependence on any ...
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