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Digital electronics is a field of electronics involving the study of digital signals and the engineering of devices that use or produce them. This is in contrast to analog electronics which work primarily with analog signals. Despite the name, digital electronics designs include important analog design considerations.
Flip-flops and latches are fundamental building blocks of digital electronics systems used in computers, communications, and many other types of systems. Flip-flops and latches are used as data storage elements to store a single bit (binary digit) of data; one of its two states represents a "one" and the other represents a "zero".
Shum, Warren; Anderson, Jason H. (2011), FPGA Glitch Power Analysis and Reduction, International Symposium on Low power electronics and design (ISLPED), pp. 27– 32 Zhanping, Chen; Liqiong, Wei; Kaushik, Roy (March 1997), Reducing Glitching and Leakage Power in Low Voltage CMOS Circuits , Purdue University School of Electrical and Computer ...
A five level PAM digital signal. In digital electronics, a digital signal is a pulse amplitude modulated signal, i.e. a sequence of fixed-width electrical pulses or light pulses, each occupying one of a discrete number of levels of amplitude. [6] [7] A special case is a logic signal or a binary signal, which varies between a low and a high ...
D. Data processing unit; Data storage tag; Databending; Datapath; Josephson junction count; Degradation (telecommunications) Delay-line memory; Delay-insensitive minterm synthesis
Systematic design methods of analog and mixed-signal circuits are far more primitive than digital circuits. In general, analog circuit design cannot be automated to nearly the extent that digital circuit design can. Combining the two technologies multiplies this complication. Fast-changing digital signals send noise to sensitive analog inputs.
An electronic circuit can usually be categorized as an analog circuit, a digital circuit, or a mixed-signal circuit (a combination of analog circuits and digital circuits). The most widely used semiconductor device in electronic circuits is the MOSFET (metal–oxide–semiconductor field-effect transistor ).
In digital circuits, a logic level is one of a finite number of states that a digital signal can inhabit. Logic levels are usually represented by the voltage difference between the signal and ground, although other standards exist. The range of voltage levels that represent each state depends on the logic family being used.